Different cast operator called by different compilers

Question

Consider the following short C++ program:

#include 

class B {
public:
    operator bool() const {
        return false;
    }
};

class B2 : pub         


        

Answer 1

Some of the previous answers, already provide a lot of info.

My contribution is, "cast operations" are compiled similar, to "overloaded operations", I suggest to make a function with a unique identifier for each operation, and later, replace it by the required operator or cast.

#include 

class B {
public:
    bool ToBool() const {
        return false;
    }
};

class B2 : public B {
public:
    int ToInt() {
        return 5;
    }
};

int main() {
    B2 b;
    std::cout << std::boolalpha << b.ToBool() << std::endl;
}

And, later, apply the operator or cast.

#include 

class B {
public:
    operator bool() {
        return false;
    }
};

class B2 : public B {
public:
    operator int() {
        return 5;
    }
};

int main() {
    B2 b;
    std::cout << std::boolalpha << (bool)b << std::endl;
}

Just my 2 cents.