learnmoderncpp-tutorial/headers/06-pixel1.cpp at main · cpp-tutor/learnmoderncpp-tutorial · GitHub

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// 06-pixel1.cpp : Color and position Pixel type through composition

#include <iostream>

#include <string_view>

using namespace std;

struct Point {

int x{}, y{};

};

enum class Color { red, green, blue };

struct Pixel {

Point pt;

Color col{};

};

string_view get_color(Color c) {

switch (c) {

case Color::red:

return "red";

case Color::green:

return "green";

case Color::blue:

return "blue";

default:

return "<no color>";

}

int main() {

Pixel p1;

cout << "Pixel p1 has color " << get_color(p1.col);

cout << " and co-ordinates " << p1.pt.x;

cout << ',' << p1.pt.y << '\n';

Pixel p2{ { -1, 2 }, Color::blue };

cout << "Pixel p2 has color " << get_color(p2.col);

cout << " and co-ordinates " << p2.pt.x;

cout << ',' << p2.pt.y << '\n';

}

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