#include <iostream>
#include <stdio.h>
#include <cstdlib>
#include <cstring>
using namespace std;
#define b 2
int main(void)
{
int a0=0;
int a1=1;
#if(a0==0)
printf("It's zero. \n"); //this one
#else
printf("It's not zero. \n");
#endif
#if(a0!=0)
printf("It's not zero. \n");
#else
printf("It's zero. \n"); //this one
#endif
#if(a1==0)
printf("It's zero. \n"); //this one
#else
printf("It's not zero. \n");
#endif
#if(a1!=0)
printf("It's not zero. \n");
#else
printf("It's zero. \n"); //this one
#endif
#if(a1==1)
printf("It's one. \n");
#else
printf("It's not one. \n"); //this one
#endif
#if(a1!=1)
printf("It's not one. \n"); //this one
#else
printf("It's one. \n");
#endif
#if(b==2)
printf("It's two. \n"); //this one
#else
printf("It's not two. \n");
#endif
#if(b!=2)
printf("It's not two. \n");
#else
printf("It's two. \n"); //this one
#endif
printf("\n");
if(a0==0)
printf("It's zero. \n"); //this one
else
printf("It's not zero. \n");
if(a0!=0)
printf("It's not zero. \n");
else
printf("It's zero. \n"); //this one
if(a1==0)
printf("It's zero. \n");
else
printf("It's not zero. \n"); //this one
if(a1!=0)
printf("It's not zero. \n"); //this one
else
printf("It's zero. \n");
if(a1==1)
printf("It's one. \n"); //this one
else
printf("It's not one. \n");
if(a1!=1)
printf("It's not one. \n");
else
printf("It's one. \n"); //this one
if(b==2)
printf("It's two. \n"); //this one
else
printf("It's not two. \n");
if(b!=2)
printf("It's not two. \n");
else
printf("It's two. \n"); //this one
return 0;
}