Question

Under what circumstances will the “False” part of the following code be executed?

x = 20;
y = -30;
if (x > y) {
    // True part
}
else {
    // False part
}

NB: Language is C, compiler is gcc (although some other compilers may also do the same thing).

Answer 1

If y is of unsigned integer type it will be initialized to some very large value (because of how negative integer values are represented) and the comparison expression will evaluate to false.