#include <stdlib.h>
#include <stdio.h>
# include<math.h>
void is_prime(int n)
{
 int i = 2;   
 while (i <= sqrt(n))
 {
  if (n%i == 0)
  {
   printf("\n %d\n", n);
   break;  
  }
  i++;
 }
 if(i > sqrt(n))
    printf("\n %d\n", n);
}
int main()
{
 int a = 9;

 is_prime(a);
 return 0;
}