why it is not returning bool

Question

https://code.sololearn.com/cHqxjRiO48hy/?ref=app
why year() is not returning bool and instead returning 1.

Answer 1

... As a matter of fact, yes.

bool test = true;

std::cout << std::boolalpha << test;

// outputs true

Answer 2

In C++, 1 (or any other value other than 0 casted to bool) is true, and 0 is false.

if (1) and if (true) is the same thing.

tl;dr - C++ will display boolean values as 1 or 0.

Answer 3

@hatsey how we can get normal true or false. can we yes we can use these as well but is there a way to do so.