FileHandling_6_Update

//Update Record From Text

#include<conio.h>
#include<stdio.h>

typedef struct student
{
    int roll, mark;
    char name[80];
}stud;

void main()
{
    stud stud;
    FILE *fp1, *fp2;
    int found = 0, find;

    clrscr();

    fp1=fopen("Student.txt","r");
    if(fp1==NULL)
    {
        printf("\n File Opening Error");
        //exit(1);
    }

    fp2=fopen("temp.txt","w");
    if(fp2==NULL)
    {
        printf("\n File Creating Error");
        //exit(1);
    }

    printf("\n Enter The Roll : ");
    scanf("%d",&find);

    while(1)
    {
        fscanf(fp1,"%d\t%s\t%d\n", &stud.roll, stud.name, &stud.mark);

        if(stud.roll==find)
        {
            found = 1;
            printf("\n Details Found");
            printf("\n Roll : %d", stud.roll);
            printf("\n Name : %s", stud.name);
            printf("\n Marks : %d", stud.mark);

            printf("\n Enter Name : ");
            scanf("%s", stud.name);
            printf("\n Enter Mark : ");
            scanf("%d",&stud.mark);

            fprintf(fp2,"%d\t%s\t%d\n", stud.roll, stud.name, stud.mark);
        }
        else
        {
            fprintf(fp2,"%d\t%s\t%d\n", stud.roll, stud.name, stud.mark);
        }
        if(feof(fp1))
        {
            break;
        }
    }

    fclose(fp1);
    fclose(fp2);
    remove("Student.txt");
    rename("temp.txt","Student.txt");
    if(found==0)
    {
        printf("\n Record %d Not Found", find);
    }
    printf("Record Updated");
    getch();
}