C++ returned data

#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;
};