Student Information System Using C - Engineering Projects

Here you will find the complete tutorial on Student Information System Using C. This software has various feature as listed below.

Note: You are free to use, edit, update and rebuild the program source codes downloaded from here. Please don’t forget to give considerable credits to Dreamlover Technology and bestengineeringprojects.com if you do so.

Project Features:

Password Protection
Add record
List Record
Search Record
Modify Record
Delete Record.

Student Information System will not be reliable and perfect enough to implement it in a real working environment, but this project is very helpful to build a basic experience on file handling using “C”. And you can also certainly expand and enhance the Student Information System program to make it implementable in the real field.

So, let’s get started!

If you already know enough about FILE and structure and can program easily using C in DEV C++, then you can directly download dev C++ IDE, start a new project, copy the code given below and compile the project.

Preparation for the program:

So to get started, here are a few steps you need to follow:

First of all, download the latest version of DEV C++ from its official site and install it in your system.
Now open the DEV C++.
Click on: File>New>Project>Empty project.
Choose a path where you would like to save your project and give your project a name (Student Information System, say).
Now click on File>New>Source file.

Now you are ready to code!

You can just simply paste the following code in the source file, compile and execute it.

The Code:

/*
Name: Student Information System
Copyright: http://bestengineeringprojects.com
Author: BEP
Date: 24/1/15 23:39
*/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<ctype.h>
#include<conio.h>
/* function deslaration start*/
void add();
void display();
void search_modify();
void delete();
void input();
void output();
void division1();
void division2();
void division3();
void division4();
/*Function declaration End*/
FILE *BEX,*BCT,*CIVIL; //file pointer
typedef struct
{
char f_name[25],l_name[25],address[100],phone_no[15],bloodgroup[5],section;
char roll[15];
float marks[6],obt_marks,avg_marks,total_marks[6],percent;
}student;
student st; //global declaration of structure

int main() //main function start
{
int c=1;
char password[10];
char pass[]={"123"};
printf("\t\t\twww.bestengineeringprojects.com");
printf("\n\n\t\tplease enter the password:> ");
gets(password);
if(strcmp(password,pass)==0) /*Password Compare*/
{

start: system("cls");
int no;
do
{
system("cls");

height: printf("\t\t====== STUDENT INFORMATION SYSTEM ======"); /*Menu*/
printf("\n\n ");
printf( "\n\n");
printf( "\n \t\t\t 1. Add Records");
printf( "\n \t\t\t 2. List Records");
printf( "\n \t\t\t 3. Search and Modify Records");
printf( "\n \t\t\t 4. Delete Records");
printf( "\n \t\t\t 5. Exit Program");
printf( "\n\n");
printf("\t\t\t Select Your Choice(1,2,3,4 or 5) :=> ");
target : scanf("%d",&no);
switch(no)
{
case 1:
add(); /* Add Function Calling*/
break;
case 2:
display(); /*Display Function Calling*/
break;
case 3:
search_modify(); /*Search_ modify Function Calling*/
break;
case 4:
delete(); /*Delete Function Calling*/
break;
case 5: /*Program exit with leaving this message*/
printf( "\n\n");
printf("\t\t THANK YOU FOR USING THIS SOFTWARE");
printf( "\n\n");
getch();
exit(0); "\n\n";
break;
default :
printf("\n\t\tInvalid choice--please enter the valid choice again:");
goto target;
break;

}
}while(no!=5);
}
else
{
while(1) /*Second time password comparing*/
{
if(c==1)
printf("\n\t\tincorrect password??? last 2 try left");
printf("\n\t\tenter the correct password again ");
gets(password);
if(strcmp(password,pass)==0)
{
goto start;
}
else if(strcmp(password,pass)!=0) /*Last time password comparing*/
{
c=c++;
if(c==2)
printf("\n\t\tinvalid password??? last time");
if(c==3)
exit(0);
}
}
}
return 0;
} //end of main function
void add() //start of add function
{
system("cls");
int ch,no;
char ans;
printf("\n\n\n"); //add menu
printf( "\n \t\t\t 1. add record in electronics faculty");
printf( "\n \t\t\t 2. add record in computer faculty");
printf( "\n \t\t\t 3. add record in civil faculty");
printf( "\n \t\t\t 4. return to main menu");
printf( "\n\n");
printf("\t\t\t Select Your Choice(1,2,3 or 4) :=> ");
top:scanf("%d",&ch);
switch(ch)
{
case 1:
system("cls"); //for electronics file
BEX=fopen("D:\\electronics.txt","ab");
if(BEX==NULL)
{
printf("error in opening electronics.txt file");
getch();
exit(0);
}

do
{
input();
fwrite(&st,sizeof(st),1,BEX);
printf("do you want to add another record (y for yes)");
fflush(stdin);
scanf("%c",&ans);
}while(tolower(ans)=='y');
fclose(BEX);
break;
case 2:
system("cls");
BCT=fopen("D:\\computer.txt","ab"); //for computer file
if(BCT==NULL)
{
printf("error in opening computer.txt file");
getch();
exit(0);
}
do
{
input();
fwrite(&st,sizeof(st),1,BCT);
printf("do you want to add another record (y for yes)");
fflush(stdin);
scanf("%c",&ans);
}while(tolower(ans)=='y');
fclose(BCT);
break;
case 3:
system("cls"); // for civil file
CIVIL=fopen("D:\\civil.txt","ab");
if(CIVIL==NULL)
{
printf("error in opening computer.txt file");
getch();
exit(0);
}
do
{
input();
fwrite(&st,sizeof(st),1,CIVIL);
printf("do you want to add another record (y for yes)");
fflush(stdin);
scanf("%c",&ans);
}while(tolower(ans)=='y');
fclose(CIVIL);
break;
case 4:
break;

default :
printf("\t\tenter the valid choice");
goto top;
break;

}
} //end of add function
void input() //start of input function
{
int z;
for(z=0;z<6;z++)
{
st.total_marks[z]=0;
st.marks[z]=0;
}
int i;
float sum=0,total=0;
char ans;
printf("\tplease enter the first name:>");
fflush(stdin);
gets(st.f_name); //name,roll no,section
printf("\tplease enter the last name:>");
fflush(stdin);
gets(st.l_name);
printf("\tplease enter the section:>");
fflush(stdin);
scanf("%c",&st.section);
printf("\tplease enter the roll number:>");
scanf("%s",st.roll);
printf("do u want to add marks(y for yes)");
fflush(stdin);
scanf("%c",&ans);
for(i=0;i<1;i++)
{
if(tolower(ans)!='y')
break; //input of marks
printf("enter the total marks & marks obtained in Computer:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
printf("enter the total marks & marks obtained in Physics:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
printf("enter the total marks & marks obtained in Applied Mechanics:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
printf("enter the total marks & marks obtained in Mathematics:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
printf("enter the total marks & marks obtained in Basic Electrical:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
printf("enter the total marks & marks obtained in Drawing:>");
scanf("%f%f",&st.total_marks[i],&st.marks[i]);
i=i+1;
}
if(i!=0)
{
for(i=0;i<6;i++)
{ //calculation of percent,average and obtained marks
sum+=st.marks[i];
total+=st.total_marks[i];
}
st.obt_marks=sum;
st.avg_marks=sum/6;
st.percent=(sum/total)*100;
}
printf("please enter the phone number:>"); //phone number
fflush(stdin);
gets(st.phone_no);
printf("please enter the address:>"); //address
fflush(stdin);
gets(st.address);
printf("\tplease enter the blood group:>"); //blood group
fflush(stdin);
gets(st.bloodgroup);

}
int dist,frist,sec,pass; //end of input function
void display() //start of display function
{
int no,fail,ch;
char blood[5];
system("cls");
reverse: printf("\n\n\n\n");
printf("\n\t\t\t1.list all");
printf("\n\t\t\t2.list of Electronics faculty");
printf("\n\t\t\t3.list of Computer faculty");
printf("\n\t\t\t4.list of Civil faculty");
printf("\n\t\t\t5.list of passed student");
printf("\n\t\t\t6.list of failed student");
printf("\n\t\t\t7.list of student by blood group");
printf("\n\t\t\t8.return to main menu");
printf("\n\n\t\t\tenter the choice your choice from(1-8)=>");
upper: scanf("%d",&no);
switch(no)
{
case 1:
system("cls"); //for electronics file
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\n\t\terror in opening electronics.txt file\n");
// getch();
// exit(0);
}
else
{
printf("\n\n\t\tfaculty \"BEX\"");
while(fread(&st,sizeof(st),1,BEX)==1)
{
output();
}
}
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file\n");
// getch();
// exit(0);
}
else
{
printf("\n\t\t\tfaculty \"BCT\"");
while(fread(&st,sizeof(st),1,BCT)==1)
{
output();
}
}
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
// exit(0);
}
printf("\n\t\t\tfaculty \"CIVIL\"");
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
output();
}
getch();
fclose(BEX);
fclose(BCT);
fclose(CIVIL);
break;
case 2:
system("cls"); //for electronics file
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\n\t\terror in opening electronics.txt file");
getch();
break;
// exit(0);
}
printf("faculty \"BEX\"");
// rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
{
output();
}
getch();
fclose(BEX);
break;
case 3:
system("cls");
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file");
getch();
break;
// exit(0);
}
printf("faculty \"BCT\"");
// rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
output();
}
getch();
fclose(BCT);
break;
case 4:
system("cls");
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
// exit(0);
}
printf("faculty \"CIVIL\"");
// rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
output();
}
getch();
fclose(CIVIL);
break;
case 5:
system("cls");
printf("enter the distiction percent=");
scanf("%d",&dist);
printf("enter the frist division percent=");
scanf("%d",&frist);
printf("enter the second division percent=");
scanf("%d",&sec);
printf("enter the passed division percent=");
scanf("%d",&pass);
system("cls");
printf("\n\n");
printf("\n\t\t500.all student");
printf("\n\t\t600.electronics student");
printf("\n\t\t700.computer student");
printf("\n\t\t800.civil student");
printf("\n\t\t900.return to menu");
printf("\n\n\t\t\tenter the choice(500,600,700,800,900)=>");
above: scanf("%d",&ch);
switch(ch)
{
case 500:
system("cls");
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\n\t\terror in opening electronics.txt file\n\n");
}
else
{
while(fread(&st,sizeof(st),1,BEX)==1)
{
division1();
}

rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
{
division2();

}
rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
{
division3();

}

rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
{
division4();

}

fclose(BEX);
}
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file\n\n");
}
else
{
while(fread(&st,sizeof(st),1,BCT)==1)
{
division1();
}
rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division2();
}

rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division3();
}

rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division4();
}

fclose(BCT);
}
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
// exit(0);
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
division1();

rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division2();

rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division3();

rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division4();
getch();
fclose(CIVIL);
break;

case 600:
system("cls");
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\t\t\terror in opening electronics.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,BEX)==1)
division1();
rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
division2();
rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
division3();
rewind(BEX);
while(fread(&st,sizeof(st),1,BEX)==1)
division4();
fclose(BEX);
getch();
break;
case 700:
system("cls");
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,BCT)==1)
{
division1();
}
rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division2();
}
rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division3();
}
rewind(BCT);
while(fread(&st,sizeof(st),1,BCT)==1)
{
division4();
}
getch();
fclose(BCT);
break;
case 800:
system("cls");
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
division1();
rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division2();
rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division3();
rewind(CIVIL);
while(fread(&st,sizeof(st),1,CIVIL)==1)
division4();
getch();
fclose(CIVIL);
break;
case 900:
system("cls");
goto reverse;
break;
default :
printf("enter the valid choice");
goto above;
break;
}
break;
case 6:
system("cls");
printf("enter the fail percent");
scanf("%d",&fail);
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\t\t\terror in opening electronics.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,BEX)==1)
{

if(st.percent<=fail)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f\n",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,BCT)==1)
{

if(st.percent<=fail)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
{

if(st.percent<=fail)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
getch();
fclose(BEX);
fclose(BCT);
fclose(CIVIL);
break;
case 7:
system("cls");
printf("enter the blood group=");
fflush(stdin);
gets(blood);
BEX=fopen("D:\\electronics.txt","rb");
if(BEX==NULL)
{
printf("\n\t\terror in opening electronics.txt file\n");
}
while(fread(&st,sizeof(st),1,BEX)==1)
{
if(strcmp(st.bloodgroup,blood)==0)
output();
}
BCT=fopen("D:\\computer.txt","rb");
if(BCT==NULL)
{
printf("\n\n\t\terror in opening computer.txt file\n");
}
while(fread(&st,sizeof(st),1,BCT)==1)
{
if(strcmp(st.bloodgroup,blood)==0)
output();
}
CIVIL=fopen("D:\\civil.txt","rb");
if(CIVIL==NULL)
{
printf("\n\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
if(strcmp(st.bloodgroup,blood)==0)
output();
}
getch();
fclose(BEX);
fclose(BCT);
fclose(CIVIL);
break;
case 8:
fclose(BEX);
fclose(BCT);
fclose(CIVIL);
system("cls");
break;
default :
printf("enter the valid choice");
goto upper;
break;
}

}
void output()
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%.2f",st.obt_marks);
printf("\nAverage marks=%.2f",st.avg_marks);
printf("\nPercentage=%.2f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
void division1()
{
if(st.percent>=dist)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}

}
void division2()
{
if(st.percent>=frist && st.percent<dist)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
void division3()
{
if(st.percent>=sec && st.percent<frist)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
void division4()
{
if(st.percent>=pass && st.percent<sec)
{
printf("\nName=%s %s",st.f_name,st.l_name);
printf("\nRoll number=%s",st.roll);
printf("\nSection=%c",st.section);
printf("\nBlood group=%s",st.bloodgroup);
printf("\nPhone no=%s",st.phone_no);
printf("\nAddress=%s",st.address);
printf("\n\n \t\tMarks obtained in each subject are:>\n");
printf("Subject \t\ttotal marks\tobt marks\t\n\n");
printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);
printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);
printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);
printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);
printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);
printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);
printf("\n\ntotal obtained marks=%f",st.obt_marks);
printf("\nAverage marks=%f",st.avg_marks);
printf("\nPercentage=%f",st.percent);
printf("\n\t------------------------------\n\n\n\n");
}
}
void search_modify()
{
int ch;
char g,r[15],ph[15],fname[25],lname[25];
system("cls");
printf("\n\t\t1.search by name");
printf("\n\t\t2.search by roll number");
printf("\n\t\t3.search by phone number");
printf("\n\t\t4.return to menu");
printf("\n\n\t\t\tenter the choice(1,2,3,4)=>");
read: scanf("%d",&ch);
switch(ch)
{
case 1:
system("cls");
printf("\n\t\t\tenter the frist name:");
fflush(stdin);
gets(fname);
printf("\n\t\t\tenter the last name:");
fflush(stdin);
gets(lname);
BEX=fopen("D:\\electronics.txt","rb+");
if(BEX==NULL)
{
printf("\n\t\terror in opening electronics.txt file\n");
}
while(fread(&st,sizeof(st),1,BEX)==1)
{
if(strcmp(st.f_name,fname)==0)
{
if(strcmp(st.l_name,lname)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BEX,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BEX);
break;
}
if('d'==tolower(g))
{
if(strcmp(st.l_name,lname)==0)
continue;
rewind(BEX);

}
}
}

}
fclose(BEX);
BCT=fopen("D:\\computer.txt","rb+");
if(BCT==NULL)
{
printf("\n\t\terror in opening computer.txt file\n");
}
while(fread(&st,sizeof(st),1,BCT)==1)
{
if(strcmp(st.f_name,fname)==0)
{
if(strcmp(st.l_name,lname)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BCT,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BCT);
break;
}
}
}

}
fclose(BCT);
CIVIL=fopen("D:\\civil.txt","rb+");
if(CIVIL==NULL)
{
printf("\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
if(strcmp(st.f_name,fname)==0)
{
if(strcmp(st.l_name,lname)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(CIVIL,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,CIVIL);
break;
}
}
}

}
getch();
fclose(CIVIL);
break;
case 2:
system("cls");
printf("\n\t\t\tenter the roll number you want to search:");
fflush(stdin);
gets(r);
BEX=fopen("D:\\electronics.txt","rb+");
if(BEX==NULL)
{
printf("\n\t\terror in opening electronics.txt file\n");
}
while(fread(&st,sizeof(st),1,BEX)==1)
{
if(strcmp(st.roll,r)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BEX,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BEX);
break;
}
}

}
fclose(BEX);
BCT=fopen("D:\\computer.txt","rb+");
if(BCT==NULL)
{
printf("\n\t\terror in opening computer.txt file\n");
}
while(fread(&st,sizeof(st),1,BCT)==1)
{
if(strcmp(st.roll,r)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BCT,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BCT);
break;
}
}

}
fclose(BCT);
CIVIL=fopen("D:\\civil.txt","rb+");
if(CIVIL==NULL)
{
printf("\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
if(strcmp(st.roll,r)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(CIVIL,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,CIVIL);
break;
}
}

}
getch();
fclose(CIVIL);
break;
case 3:
system("cls");
printf("\n\tenter the phone number you want to search:");
fflush(stdin);
gets(ph);
BEX=fopen("D:\\electronics.txt","rb+");
if(BEX==NULL)
{
printf("\n\t\terror in opening electronics.txt file\n");
}
while(fread(&st,sizeof(st),1,BEX)==1)
{
if(strcmp(st.phone_no,ph)==0)
{
output();
printf("\n\n\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BEX,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BEX);
break;
}
}

}
fclose(BEX);
BCT=fopen("D:\\computer.txt","rb+");
if(BCT==NULL)
{
printf("\n\t\terror in opening computer.txt file\n");
}
while(fread(&st,sizeof(st),1,BCT)==1)
{
if(strcmp(st.phone_no,ph)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(BCT,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,BCT);
break;
}
}

}
fclose(BCT);
CIVIL=fopen("D:\\civil.txt","rb+");
if(CIVIL==NULL)
{
printf("\n\t\terror in opening civil.txt file");
getch();
break;
}
while(fread(&st,sizeof(st),1,CIVIL)==1)
{
if(strcmp(st.phone_no,ph)==0)
{
output();
printf("\n\n\t\tDo you want to modify this record");
printf("\n enter 'y' for yes or press any other key = ");
scanf("%c",&g);
if('y'==tolower(g))
{
input();
fseek(CIVIL,-sizeof(st),SEEK_CUR);
fwrite(&st,sizeof(st),1,CIVIL);
break;
}
}

}
getch();
fclose(CIVIL);
break;
case 4:
break;
default :
printf("invalid choice\?\?--please enter correct choice");
goto read;
break;
}
}
void delete()
{

}

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1158

Name: Student Information System

Author: BEP

Date: 24/1/15 23:39

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

#include<ctype.h>

#include<conio.h>

/* function deslaration start*/

void add();

void display();

void search_modify();

void delete();

void input();

void output();

void division1();

void division2();

void division3();

void division4();

/*Function declaration End*/

FILE *BEX,*BCT,*CIVIL; //file pointer

typedef struct

{

char f_name[25],l_name[25],address[100],phone_no[15],bloodgroup[5],section;

char roll[15];

float marks[6],obt_marks,avg_marks,total_marks[6],percent;

}student;

student st; //global declaration of structure

int main() //main function start

{

int c=1;

char password[10];

char pass[]={"123"};

printf("\t\t\twww.bestengineeringprojects.com");

printf("\n\n\t\tplease enter the password:> ");

gets(password);

if(strcmp(password,pass)==0) /*Password Compare*/

{

start: system("cls");

int no;

{

system("cls");

height: printf("\t\t====== STUDENT INFORMATION SYSTEM ======"); /*Menu*/

printf("\n\n ");

printf( "\n\n");

printf( "\n \t\t\t 1. Add Records");

printf( "\n \t\t\t 2. List Records");

printf( "\n \t\t\t 3. Search and Modify Records");

printf( "\n \t\t\t 4. Delete Records");

printf( "\n \t\t\t 5. Exit Program");

printf( "\n\n");

printf("\t\t\t Select Your Choice(1,2,3,4 or 5) :=> ");

target : scanf("%d",&no);

switch(no)

{

case 1:

add(); /* Add Function Calling*/

break;

case 2:

display(); /*Display Function Calling*/

break;

case 3:

search_modify(); /*Search_ modify Function Calling*/

break;

case 4:

delete(); /*Delete Function Calling*/

break;

case 5: /*Program exit with leaving this message*/

printf( "\n\n");

printf("\t\t THANK YOU FOR USING THIS SOFTWARE");

printf( "\n\n");

getch();

exit(0); "\n\n";

break;

default :

printf("\n\t\tInvalid choice--please enter the valid choice again:");

goto target;

break;

}

}while(no!=5);

}

else

{

while(1) /*Second time password comparing*/

{

if(c==1)

printf("\n\t\tincorrect password??? last 2 try left");

printf("\n\t\tenter the correct password again ");

gets(password);

if(strcmp(password,pass)==0)

{

goto start;

}

else if(strcmp(password,pass)!=0) /*Last time password comparing*/

{

c=c++;

if(c==2)

printf("\n\t\tinvalid password??? last time");

if(c==3)

exit(0);

}

return 0;

} //end of main function

void add() //start of add function

{

system("cls");

int ch,no;

char ans;

printf("\n\n\n"); //add menu

printf( "\n \t\t\t 1. add record in electronics faculty");

printf( "\n \t\t\t 2. add record in computer faculty");

printf( "\n \t\t\t 3. add record in civil faculty");

printf( "\n \t\t\t 4. return to main menu");

printf( "\n\n");

printf("\t\t\t Select Your Choice(1,2,3 or 4) :=> ");

top:scanf("%d",&ch);

switch(ch)

{

case 1:

system("cls"); //for electronics file

BEX=fopen("D:\\electronics.txt","ab");

if(BEX==NULL)

{

printf("error in opening electronics.txt file");

getch();

exit(0);

}

{

input();

fwrite(&st,sizeof(st),1,BEX);

printf("do you want to add another record (y for yes)");

fflush(stdin);

scanf("%c",&ans);

}while(tolower(ans)=='y');

fclose(BEX);

break;

case 2:

system("cls");

BCT=fopen("D:\\computer.txt","ab"); //for computer file

if(BCT==NULL)

{

printf("error in opening computer.txt file");

getch();

exit(0);

}

{

input();

fwrite(&st,sizeof(st),1,BCT);

printf("do you want to add another record (y for yes)");

fflush(stdin);

scanf("%c",&ans);

}while(tolower(ans)=='y');

fclose(BCT);

break;

case 3:

system("cls"); // for civil file

CIVIL=fopen("D:\\civil.txt","ab");

if(CIVIL==NULL)

{

printf("error in opening computer.txt file");

getch();

exit(0);

}

{

input();

fwrite(&st,sizeof(st),1,CIVIL);

printf("do you want to add another record (y for yes)");

fflush(stdin);

scanf("%c",&ans);

}while(tolower(ans)=='y');

fclose(CIVIL);

break;

case 4:

break;

default :

printf("\t\tenter the valid choice");

goto top;

break;

}

} //end of add function

void input() //start of input function

{

int z;

for(z=0;z<6;z++)

{

st.total_marks[z]=0;

st.marks[z]=0;

}

int i;

float sum=0,total=0;

char ans;

printf("\tplease enter the first name:>");

fflush(stdin);

gets(st.f_name); //name,roll no,section

printf("\tplease enter the last name:>");

fflush(stdin);

gets(st.l_name);

printf("\tplease enter the section:>");

fflush(stdin);

scanf("%c",&st.section);

printf("\tplease enter the roll number:>");

scanf("%s",st.roll);

printf("do u want to add marks(y for yes)");

fflush(stdin);

scanf("%c",&ans);

for(i=0;i<1;i++)

{

if(tolower(ans)!='y')

break; //input of marks

printf("enter the total marks & marks obtained in Computer:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

printf("enter the total marks & marks obtained in Physics:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

printf("enter the total marks & marks obtained in Applied Mechanics:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

printf("enter the total marks & marks obtained in Mathematics:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

printf("enter the total marks & marks obtained in Basic Electrical:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

printf("enter the total marks & marks obtained in Drawing:>");

scanf("%f%f",&st.total_marks[i],&st.marks[i]);

i=i+1;

}

if(i!=0)

{

for(i=0;i<6;i++)

{ //calculation of percent,average and obtained marks

sum+=st.marks[i];

total+=st.total_marks[i];

}

st.obt_marks=sum;

st.avg_marks=sum/6;

st.percent=(sum/total)*100;

}

printf("please enter the phone number:>"); //phone number

fflush(stdin);

gets(st.phone_no);

printf("please enter the address:>"); //address

fflush(stdin);

gets(st.address);

printf("\tplease enter the blood group:>"); //blood group

fflush(stdin);

gets(st.bloodgroup);

}

int dist,frist,sec,pass; //end of input function

void display() //start of display function

{

int no,fail,ch;

char blood[5];

system("cls");

reverse: printf("\n\n\n\n");

printf("\n\t\t\t1.list all");

printf("\n\t\t\t2.list of Electronics faculty");

printf("\n\t\t\t3.list of Computer faculty");

printf("\n\t\t\t4.list of Civil faculty");

printf("\n\t\t\t5.list of passed student");

printf("\n\t\t\t6.list of failed student");

printf("\n\t\t\t7.list of student by blood group");

printf("\n\t\t\t8.return to main menu");

printf("\n\n\t\t\tenter the choice your choice from(1-8)=>");

upper: scanf("%d",&no);

switch(no)

{

case 1:

system("cls"); //for electronics file

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\n\t\terror in opening electronics.txt file\n");

// getch();

// exit(0);

}

else

{

printf("\n\n\t\tfaculty \"BEX\"");

while(fread(&st,sizeof(st),1,BEX)==1)

{

output();

}

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file\n");

// getch();

// exit(0);

}

else

{

printf("\n\t\t\tfaculty \"BCT\"");

while(fread(&st,sizeof(st),1,BCT)==1)

{

output();

}

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

// exit(0);

}

printf("\n\t\t\tfaculty \"CIVIL\"");

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

output();

}

getch();

fclose(BEX);

fclose(BCT);

fclose(CIVIL);

break;

case 2:

system("cls"); //for electronics file

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\n\t\terror in opening electronics.txt file");

getch();

break;

// exit(0);

}

printf("faculty \"BEX\"");

// rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

{

output();

}

getch();

fclose(BEX);

break;

case 3:

system("cls");

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file");

getch();

break;

// exit(0);

}

printf("faculty \"BCT\"");

// rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

output();

}

getch();

fclose(BCT);

break;

case 4:

system("cls");

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

// exit(0);

}

printf("faculty \"CIVIL\"");

// rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

output();

}

getch();

fclose(CIVIL);

break;

case 5:

system("cls");

printf("enter the distiction percent=");

scanf("%d",&dist);

printf("enter the frist division percent=");

scanf("%d",&frist);

printf("enter the second division percent=");

scanf("%d",&sec);

printf("enter the passed division percent=");

scanf("%d",&pass);

system("cls");

printf("\n\n");

printf("\n\t\t500.all student");

printf("\n\t\t600.electronics student");

printf("\n\t\t700.computer student");

printf("\n\t\t800.civil student");

printf("\n\t\t900.return to menu");

printf("\n\n\t\t\tenter the choice(500,600,700,800,900)=>");

above: scanf("%d",&ch);

switch(ch)

{

case 500:

system("cls");

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\n\t\terror in opening electronics.txt file\n\n");

}

else

{

while(fread(&st,sizeof(st),1,BEX)==1)

{

division1();

}

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

{

division2();

}

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

{

division3();

}

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

{

division4();

}

fclose(BEX);

}

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file\n\n");

}

else

{

while(fread(&st,sizeof(st),1,BCT)==1)

{

division1();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division2();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division3();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division4();

}

fclose(BCT);

}

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

// exit(0);

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

division1();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division2();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division3();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division4();

getch();

fclose(CIVIL);

break;

case 600:

system("cls");

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\t\t\terror in opening electronics.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,BEX)==1)

division1();

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

division2();

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

division3();

rewind(BEX);

while(fread(&st,sizeof(st),1,BEX)==1)

division4();

fclose(BEX);

getch();

break;

case 700:

system("cls");

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

division1();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division2();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division3();

}

rewind(BCT);

while(fread(&st,sizeof(st),1,BCT)==1)

{

division4();

}

getch();

fclose(BCT);

break;

case 800:

system("cls");

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

division1();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division2();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division3();

rewind(CIVIL);

while(fread(&st,sizeof(st),1,CIVIL)==1)

division4();

getch();

fclose(CIVIL);

break;

case 900:

system("cls");

goto reverse;

break;

default :

printf("enter the valid choice");

goto above;

break;

}

break;

case 6:

system("cls");

printf("enter the fail percent");

scanf("%d",&fail);

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\t\t\terror in opening electronics.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,BEX)==1)

{

if(st.percent<=fail)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f\n",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

if(st.percent<=fail)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

if(st.percent<=fail)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

getch();

fclose(BEX);

fclose(BCT);

fclose(CIVIL);

break;

case 7:

system("cls");

printf("enter the blood group=");

fflush(stdin);

gets(blood);

BEX=fopen("D:\\electronics.txt","rb");

if(BEX==NULL)

{

printf("\n\t\terror in opening electronics.txt file\n");

}

while(fread(&st,sizeof(st),1,BEX)==1)

{

if(strcmp(st.bloodgroup,blood)==0)

output();

}

BCT=fopen("D:\\computer.txt","rb");

if(BCT==NULL)

{

printf("\n\n\t\terror in opening computer.txt file\n");

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

if(strcmp(st.bloodgroup,blood)==0)

output();

}

CIVIL=fopen("D:\\civil.txt","rb");

if(CIVIL==NULL)

{

printf("\n\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

if(strcmp(st.bloodgroup,blood)==0)

output();

}

getch();

fclose(BEX);

fclose(BCT);

fclose(CIVIL);

break;

case 8:

fclose(BEX);

fclose(BCT);

fclose(CIVIL);

system("cls");

break;

default :

printf("enter the valid choice");

goto upper;

break;

}

void output()

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%.2f",st.obt_marks);

printf("\nAverage marks=%.2f",st.avg_marks);

printf("\nPercentage=%.2f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

void division1()

{

if(st.percent>=dist)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

void division2()

{

if(st.percent>=frist && st.percent<dist)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

void division3()

{

if(st.percent>=sec && st.percent<frist)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

void division4()

{

if(st.percent>=pass && st.percent<sec)

{

printf("\nName=%s %s",st.f_name,st.l_name);

printf("\nRoll number=%s",st.roll);

printf("\nSection=%c",st.section);

printf("\nBlood group=%s",st.bloodgroup);

printf("\nPhone no=%s",st.phone_no);

printf("\nAddress=%s",st.address);

printf("\n\n \t\tMarks obtained in each subject are:>\n");

printf("Subject \t\ttotal marks\tobt marks\t\n\n");

printf("Computer= \t\t%.2f\t\t%.2f\n",st.total_marks[0],st.marks[0]);

printf("physics= \t\t%.2f\t\t%.2f\n",st.total_marks[1],st.marks[1]);

printf("Mechanics= \t\t%.2f\t\t%.2f\n",st.total_marks[2],st.marks[2]);

printf("Mathematics=\t\t%.2f\t\t%.2f\n",st.total_marks[3],st.marks[3]);

printf("Electrical= \t\t%.2f\t\t%.2f\n",st.total_marks[4],st.marks[4]);

printf("Drawing= \t\t%.2f\t\t%.2f\n",st.total_marks[5],st.marks[5]);

printf("\n\ntotal obtained marks=%f",st.obt_marks);

printf("\nAverage marks=%f",st.avg_marks);

printf("\nPercentage=%f",st.percent);

printf("\n\t------------------------------\n\n\n\n");

}

void search_modify()

{

int ch;

char g,r[15],ph[15],fname[25],lname[25];

system("cls");

printf("\n\t\t1.search by name");

printf("\n\t\t2.search by roll number");

printf("\n\t\t3.search by phone number");

printf("\n\t\t4.return to menu");

printf("\n\n\t\t\tenter the choice(1,2,3,4)=>");

read: scanf("%d",&ch);

switch(ch)

{

case 1:

system("cls");

printf("\n\t\t\tenter the frist name:");

fflush(stdin);

gets(fname);

printf("\n\t\t\tenter the last name:");

fflush(stdin);

gets(lname);

BEX=fopen("D:\\electronics.txt","rb+");

if(BEX==NULL)

{

printf("\n\t\terror in opening electronics.txt file\n");

}

while(fread(&st,sizeof(st),1,BEX)==1)

{

if(strcmp(st.f_name,fname)==0)

{

if(strcmp(st.l_name,lname)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BEX,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BEX);

break;

}

if('d'==tolower(g))

{

if(strcmp(st.l_name,lname)==0)

continue;

rewind(BEX);

}

fclose(BEX);

BCT=fopen("D:\\computer.txt","rb+");

if(BCT==NULL)

{

printf("\n\t\terror in opening computer.txt file\n");

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

if(strcmp(st.f_name,fname)==0)

{

if(strcmp(st.l_name,lname)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BCT,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BCT);

break;

}

fclose(BCT);

CIVIL=fopen("D:\\civil.txt","rb+");

if(CIVIL==NULL)

{

printf("\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

if(strcmp(st.f_name,fname)==0)

{

if(strcmp(st.l_name,lname)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(CIVIL,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,CIVIL);

break;

}

getch();

fclose(CIVIL);

break;

case 2:

system("cls");

printf("\n\t\t\tenter the roll number you want to search:");

fflush(stdin);

gets(r);

BEX=fopen("D:\\electronics.txt","rb+");

if(BEX==NULL)

{

printf("\n\t\terror in opening electronics.txt file\n");

}

while(fread(&st,sizeof(st),1,BEX)==1)

{

if(strcmp(st.roll,r)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BEX,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BEX);

break;

}

fclose(BEX);

BCT=fopen("D:\\computer.txt","rb+");

if(BCT==NULL)

{

printf("\n\t\terror in opening computer.txt file\n");

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

if(strcmp(st.roll,r)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BCT,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BCT);

break;

}

fclose(BCT);

CIVIL=fopen("D:\\civil.txt","rb+");

if(CIVIL==NULL)

{

printf("\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

if(strcmp(st.roll,r)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(CIVIL,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,CIVIL);

break;

}

getch();

fclose(CIVIL);

break;

case 3:

system("cls");

printf("\n\tenter the phone number you want to search:");

fflush(stdin);

gets(ph);

BEX=fopen("D:\\electronics.txt","rb+");

if(BEX==NULL)

{

printf("\n\t\terror in opening electronics.txt file\n");

}

while(fread(&st,sizeof(st),1,BEX)==1)

{

if(strcmp(st.phone_no,ph)==0)

{

output();

printf("\n\n\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BEX,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BEX);

break;

}

fclose(BEX);

BCT=fopen("D:\\computer.txt","rb+");

if(BCT==NULL)

{

printf("\n\t\terror in opening computer.txt file\n");

}

while(fread(&st,sizeof(st),1,BCT)==1)

{

if(strcmp(st.phone_no,ph)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(BCT,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,BCT);

break;

}

fclose(BCT);

CIVIL=fopen("D:\\civil.txt","rb+");

if(CIVIL==NULL)

{

printf("\n\t\terror in opening civil.txt file");

getch();

break;

}

while(fread(&st,sizeof(st),1,CIVIL)==1)

{

if(strcmp(st.phone_no,ph)==0)

{

output();

printf("\n\n\t\tDo you want to modify this record");

printf("\n enter 'y' for yes or press any other key = ");

scanf("%c",&g);

if('y'==tolower(g))

{

input();

fseek(CIVIL,-sizeof(st),SEEK_CUR);

fwrite(&st,sizeof(st),1,CIVIL);

break;

}

getch();

fclose(CIVIL);

break;

case 4:

break;

default :

printf("invalid choice\?\?--please enter correct choice");

goto read;

break;

}

void delete()

{

}

Output Sample:

Click Here to Download Complete Code and output.

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