to print numbers from 1-50 which are divided by 7

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

void main ()
{
    int a;
    clrscr ();
    a=1;

    while (a<=50)
    {
        if (a%7==0)
        printf ("%d\n",a);
        a++;
    }
    getch ();
}