/* --------------------------------------------
   Readin a value and check for prime number
   -------------------------------------------- */

#include <stdio.h>

int main(int argc, char *argv[])
{
    int x;
    int isPrime;   // int used as a boolean

    printf("Enter a number: ");
    scanf("%d", &x);

    isPrime = 1;   // 1 = True

    for ( int i = 2; i < x; i++ )
    {
        if ( x%i == 0 )
	{
            isPrime = 0;  // x is not prime
	    break;
 	}
    }
   
    printf("%d is %s\n", x, (isPrime ? "prime" : "not prime") );
}