#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("Q: if if(-1) is true?\n");
    if(-1)
    {
        printf("A: yes!\n");
    }
    else
    {
        printf("A: no!\n");
    }
    
    printf("Q: if if(0) is true?\n");
    if(0)
    {
        printf("A: yes!\n");
    }
    else
    {
        printf("A: no!\n");
    }

    printf("Q: if if(1) is true?\n");
    if(1)
    {
        printf("A: yes!\n");
    }
    else
    {
        printf("A: no!\n");
    }
    
    printf("Q: if if('a') is true?\n");
    if('a')
    {
        printf("A: yes!\n");
    }
    else
    {
        printf("A: no!\n");
    }

    printf("Q: if if(true) is true?\n");
    
    return 0;
}