#include <stdio.h>

int main(void){
  int num;

  num = 5;
  printf("num = %d\n",num);

  if (num >= 0) {
    printf("正の数です\n");
  }else{
    printf("負の数です\n");
  }

  num = -9;
  printf("num = %d\n",num);

  if (num >= 0)
    printf("正の数です\n");
  else
    printf("負の数です\n");

  return 0;
}