Q. Divisibility of a no. and prime or not ?

THE OUTPUT WOULD BE

 
#include<stdio.h>
#include<conio.h>
  void main( )
  {    clrscr( );
        int n,i,a=0;
        printf("Enter a number=");
        scanf("%d",&n);
        for(i=1;i<=n;i++)
        { if(n%i==0)
          { a++;
             printf("\nDivisible by %d",i);
          }
        }
        if(a==2)
        printf("\nPrime number");
        getch( );
}