cpp_callbacks.cpp

#include <iostream>
#include <functional>

void f(int i)
{
    std::cout << " called f" << std::endl;
}

class my_class {
    private:
    public:
        my_class() { }
        ~my_class() { }
        void class_call() {
            std::cout << "class_call made" << std::endl;
        }
};

int main()
{
    std::function<void(int)> cb;
    my_class c;

    cb = std::bind(&my_class::class_call, &c);

    cb(4);
}