# include <stdio.h>
# include <conio.h>
# include <string.h>
struct student{
long roll ;
char name[20];
char branch[20];
};
int add()
{
struct student s;
system("cls");
FILE *fp;
char c;
fp=fopen("record.txt","a");
while (1)
{
printf("ENTER THE Roll Number:->");
scanf("%ld",&s.roll);
fflush(stdin);
printf("\nENTER THE NAME :->");
scanf("%s",s.name);
fflush(stdin);
printf("\nENTER THE BRANCH :->");
scanf("%s",s.branch);
fwrite(&s,sizeof(s),1,fp);
fflush(stdin);
printf("\n\nWISH TO CONTINUE?(Y/N)");
scanf("%c",&c);
if(c=='n' || c=='N')
break;
}
system("cls");
fclose(fp);
return 0;
}
int search()
{
struct student s;
system("cls");
FILE *fp;
char sname[20];
fp=fopen("record.txt","r");
printf("ENTER THE NAME :->");
scanf("%s",sname);
while(fread(&s,sizeof(s),1,fp))
{
if(strcmp(sname,s.name)==0)
{
printf("\n\t%ld\t %s\t %s",s.roll,s.name,s.branch);
getch();
break;
}
}
system("cls");
fclose(fp);
return 0;
getch();
}
void delete()
{
struct student s;
system("cls");
FILE *fp;
FILE *ft;
int r, t;
printf("Enter the Roll no you want to delete :");
scanf("%d", &r);
if (r == 0)
printf("Roll no %d is not available in the file\n", r);
else
{
fp = fopen("record.txt", "r");
ft = fopen("temp.txt", "w");
while (fread(&s, sizeof(s), 1, fp))
{
t = s.roll;
if (t != r)
fwrite(&s, sizeof(s), 1, ft);
}
fclose(fp);
fclose(ft);
fp = fopen("record.txt", "w");
ft = fopen("temp.txt", "r");
while (fread(&s, sizeof(s), 1, ft))
fwrite(&s, sizeof(s), 1, fp);
printf("\nRECORD DELETED\n");
system("cls");
fclose(fp);
fclose(ft);
}
}
int display()
{
system("CLS");
struct student s;
FILE *fp;
fp=fopen("record.txt","r");
while(fread(&s,sizeof(s),1,fp)==1)
{
printf("\n\t%ld\t %s\t %s",s.roll,s.name,s.branch);
}
system("cls");
fclose(fp);
getch();
return 0;
}
int update()
{
struct student s;
system("cls");
int avl;
FILE *ft;
FILE *fp;
int t, r, ch;
printf("Enter roll number to update:");
scanf("%d", &r);
avl = r;
if (avl == 0)
{
printf("Roll number %d is not Available in the file", r);
}
else
{
fp = fopen("record.txt", "r");
ft = fopen("temp.txt", "w");
while (fread(&s, sizeof(s), 1, fp))
{
t = s.roll;
if (t != r)
fwrite(&s, sizeof(s), 1, ft);
else
{
printf("\n\t1. Update Name of Roll Number %d", r);
printf("\n\t2. Update branch of Roll Number %d", r);
printf("\n\t3. Update both Name and branch of Roll Number %d", r);
printf("\nEnter your choice:");
scanf("%d", &ch);
switch (ch)
{
case 1:
printf("Enter Name:");
scanf("%s", &s.name);
break;
case 2:
printf("Enter branch : ");
scanf("%s", &s.branch);
break;
case 3:
printf("Enter Name: ");
scanf("%s", &s.name);
printf("Enter Branch: ");
scanf("%s", &s.branch);
break;
default:
printf("Invalid Selection");
break;
}
fwrite(&s, sizeof(s), 1, ft);
}
}
fclose(fp);
fclose(ft);
fp = fopen("record.txt", "w");
ft = fopen("temp.txt", "r");
while (fread(&s, sizeof(s), 1, ft))
{
fwrite(&s, sizeof(s), 1, fp);
}
system("cls");
fclose(fp);
fclose(ft);
printf("RECORD UPDATED");
}
}
main()
{
struct student s;
FILE *fp;
long rno;
system("cls");
int ch;
while(1)
{
printf("\n\t\t**********************************************");
printf("\n\t\t* College REGISTRATION SYSTEM *");
printf("\n\t\t**********************************************");
printf("\n");
printf("\n\t\t\t[1]Add New Student Record ");
printf("\n\t\t\t[2]Delete Student Record ");
printf("\n\t\t\t[3]Display Student Record ");
printf("\n\t\t\t[4]Modify Student Record ");
printf("\n\t\t\t[5]Search Student Record ");
printf("\n\t\t\t[6]Exit ");
printf("\n\n\t\t\tPlease Enter Your Choice: ");
fflush(stdin);
scanf("%d",&ch);
switch(ch)
{
case 1:
add();
break;
case 2:
delete();
break;
case 3:
display();
break;
case 4:
update();
break;
case 5:
search();
break;
default : printf("Wrong!");
}
}
getch();
}
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