increment-suffix-postfix.cpp

#include <iostream>

class Punct
{
private:
    float x;
    float y;
public:
    Punct(): x(.0f), y(.0f) { std::cout << "default" << std::endl; }
    Punct(float _x, float _y): x(_x), y(_y) { std::cout << "general" << std::endl; }
    Punct(const Punct& obj): x(obj.x), y(obj.y) { std::cout << "copy" << std::endl; }
    ~Punct() { std::cout << "destructor" << std::endl; }
    int getX() { return x; }
    int getY() { return y; }

    Punct& operator ++ ()
    {
        std::cout << "suffix" << std::endl;
        ++x;
        ++y;
        return *this;
    }
    Punct operator ++ (int)
    {
        std::cout << "postfix" << std::endl;
        Punct p(*this);
        ++(*this);
        return p;
    }
    Punct& operator = (const Punct& obj)
    {
        std::cout << "equal" << std::endl;
        x = obj.x;
        y = obj.y;
    }
};

int main(int argc, char **argv)
{
    Punct p1(1, 2);
    Punct p2 = p1++;

    std::cout << p2.getX() << " " << p2.getY() << std::endl;

    return 0;
}