#include <stdio.h>

void main(void)
{ 
int age = 10;
int user_has_dog = 0;   // 0 is false
if (age == 10)
{
printf("Dogs are important pets\n");
if (! user_has_dog)
printf("You should get a dalmatian\n");
}
printf("Happy is a dalmatian\n");
}