c++ exceptions are the best exceptions in the world!

#include <iostream>

class MyException : std::exception {
    std::string msg;
public:
    MyException(std::string s) : msg(s) {

    }

    const char *what() {
        return msg.c_str();
    }
};

int main() {

    try {
        throw MyException("hello!");
    } catch (std::exception &e) {
        std::cerr << e.what() << std::endl;
    }
}