That's not true. C++ does define an implicit conversion from bool to int: https://en.cppreference.com/w/cpp/language/implicit_conversion https://en.cppreferen

That's not true. C++ does define an implicit conversion from bool to int: https://en.cppreference.com/w/cpp/language/implicit_conversion https://en.cppreference.com/w/cpp/language/implicit_conversi... (under "Integral promotion") And C has a boolean type as of C99.