# include <stdio.h>
# include <stdbool.h>

int main ( )
{
  int p;
  int i;
  bool prime;
//
//  Try p = 5 and p = 6.
//
  p = 5;

  prime = true;
  for ( i = 2; i < p; i++ )
  {
    if ( i * p / i == p )
    {
      printf ( "  %d * %d / %d = %d\n", i, p, i, p );
      prime = false;
    }
  }
  printf ( "  Prime test for %d is %i\n", p, prime );

  prime = true;
  for ( i = 2; i < p; i++ )
  {
    if ( i * ( p / i ) == p )
    {
      printf ( "  %d * ( %d / %d ) = %d\n", i, p, i, p );
      prime = false;
    }
  }
  printf ( "  Prime test for %d is %i\n", p, prime );

  prime = true;
  for ( i = 2; i < p; i++ )
  {
    if ( p % i == 0 )
    {
      printf ( "  %d %% %d = 0\n", p, i );
      prime = false;
    }
  }
  printf ( "  Prime test for %d is %i\n", p, prime );

  return 0;
}