#include <stdio.h>

main() {
  int this_number, divisor, prime;

  this_number = 3;

  while (1) {
    divisor = this_number / 2;
    prime = 1;

    while (divisor > 1) {
      if (this_number % divisor == 0) {
        prime = 0;
        divisor = 0;
      } else {
        divisor = divisor - 1;
      }
    }

    if (prime == 1) {
      printf("%d is a prime number\n", this_number);
    }

    this_number = this_number + 1;
  }
}