File Program
#include<stdio.h>
#include<conio.h>
void main()
{
FILE *fp1, *fp2, *fp3;
fp1 = fopen("1.txt", "w");
fp2 = fopen("2.ppp", "w");
fp3 = fopen("3.xyz", "w");
fprintf(fp1, "Welcome to BCA");
fprintf(fp2, "Gujarat");
fprintf(fp3, "University");
fcloseall();
}
Header File Program
#include<stdio.h>
#include<conio.h>
#include"reverse.c"
void main()
{
long int no;
clrscr();
printf("\nEnter number: ");
scanf("%ld", &no);
printf("\n\nReverse number = %ld", reverse(no)) ;
getch();
}
Header File Name. reverse.c
long reverse(long int no)
{
long revno=0;
int rem;
while(no > 0)
{
rem = no % 10;
revno = revno * 10 + rem;
no = no / 10;
}
return revno;
}
