06-point2.cpp

// 06-point2.cpp : a Point type with getter and setters which check for values being within range

import std;
using namespace std;

struct Point {
    void setX(int nx)
    {
        if (nx < 0) {
            x = 0;
        }
        else if (nx > screenX) {
            x = screenX;
        }
        else {
            x = nx;
        }
    }
    void setY(int ny)
    {
        if (ny < 0) {
            y = 0;
        }
        else if (ny > screenY) {
            y = screenY;
        }
        else {
            y = ny;
        }
    }
    auto getXY() const {
        return pair{x, y};
    }
    static const int screenX{ 639 }, screenY{ 479 };
private:
    int x{}, y{};
};

int main() {
    cout << "Screen is " << Point::screenX + 1 << " by " << Point::screenY + 1 << '\n';
    Point p;
    int user_x{}, user_y{};
    cout << "Please enter x and y for Point:\n";
    cin >> user_x >> user_y;
    p.setX(user_x);
    p.setY(user_y);
    auto [ px, py ] = p.getXY();
    cout << "px = " << px << ", py = " << py << '\n';
}