--- In [email protected], Pawan Kumar <[EMAIL PROTECTED]> wrote:
>
>
>
> Jack Go <[EMAIL PROTECTED]> wrote: HI all,
>
> I am new here, need some advice. I need to know how to read
a record line by line.
>
> Cheers,
> Inid2know
>
>
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>
hey friend please just see this program .i am very new user of c
language .so please dont mis understand me.
#include<stdio.h>
#include<conio.h>
struct student
{
char name[20];
int roll,age;
}S;
void main()
{
FILE *fp;
struct student S;
char ch;
int size,roll;
size = sizeof(S);
fp = fopen("Stud.dat","rb+");
if(fp==NULL)
fp = fopen("Stud.dat","wb+");
clrscr();
fseek(fp,0,SEEK_END);
do
{
printf("\nEnter the details of the studemt ");
scanf("%s %d %d",S.name,&S.roll,&S.age);
fwrite(&S,size,1,fp);
printf("\nCont ..........");
fflush(stdin);
scanf("%c",&ch);
}while(ch=='y');
rewind (fp);
printf("\nthe details of the student are \n");
while(fread(&S,size,1,fp)!=0)
printf("\n%s \t%d \t%d\n",S.name,S.roll,S.age);
rewind(fp);
printf("\nEnter the roll ");
scanf("%d",&roll);
printf("\nthe details of the student are \n");
while(fread(&S,size,1,fp)==1)
{
if(roll == S.roll)
{
printf("\nFound the record ");
printf("\n%s \t%d \t%d\n",S.name,S.roll,S.age);
S.age=100;
fseek(fp,-size,SEEK_CUR);
fwrite(&S,size,1,fp);
break;
}
}
if(feof(fp))
printf("\nRecord not found ");
rewind (fp);
clrscr();
printf("\nthe details of the student after modification are \n");
while(fread(&S,size,1,fp)==1)
{
printf("\n%s \t%d \t%d\n",S.name,S.roll,S.age);
}
getch();
}
