C++

15.7    How Methods Work

When using methods in class hierarchies, you need to be aware of a few things. Take a look at Listing 15.6: pay attention to which other methods print calls, and consider what you would expect. I have reduced the program to the essentials, which is why it looks somewhat theoretical.

// https://godbolt.org/z/YTK8PfcMc#include <iostream>struct Base {    int eight_ = 8;    int value() const { return eight_; }    void print(std::ostream& os) const { os << value() << "\n"; }};struct Print : public Base {    int nine_ = 9;    void print(std::ostream& os) const { os << value() << "\n"; }};struct Value : public Base {    int ten_ = 10;    int value() const { return ten_; }};struct Both : public Base {    int eleven_ = 11;    int value() const { return ...