Can anyone explain why no is printing

Question

#include <stdio.h>

int main() {
if(sizeof(int) > -1){
printf("yes");
}
else
printf("no");
return 0;
}

Answer 1

Because sizeof returns an unsigned long long.
As a result -1 is converted to the unsigned long long equivalent, which is 2^64 - 1.

The size of an int is definitely smaller than that.

Answer 2

Just like ~ swim ~ said in one of his answer and I still remember.
Try printing this line and see-

printf ("%lu", (long unsigned int)(-1));