//code for divisibility by 7.
//includes
#include<stdio.h>
#include<conio.h>
//main thread
int main ()

{
int a,b=7;//local variable.
printf("enter the value of a ");//ask for the number of terms.
scanf("%d",&a);
if (a%b == 0)//check if remainder is zero or not.
{ printf("a is divisible by 7");//if true print this.
}
else
{
    printf("a is not divisible by  7 ");//if false print this.
}


 }