#include <iostream>struct A {    void test() const {//can only be called on a const object        std::cout << "const version called\n"    }    void test() {        std::cout << "non-const version called\n"    }};struct B {    const int& test() const {//return a const reference        return myInt;    }    int& test() {        return myInt;    }    int getValue() const {//have to make const or else can't be called on a cont object - try changing it        return value;    }    B() : value(0) {}private:    int value;};int main() {    A object;    object.test();    const A constObject;    constObject.test();    B b;    b.test() = 5;    const B constB;    //constB.test() = 5;//not allowed won't compile    std::cout << b.getValue() << "\n";    std::cout << constB.getValue() << "\n";    return 0;};