# tic-tac-toe board [fltk]

Bjarne Stroustrup “Programming Principles and Practice Using C++”
Chapter 12 Exercise 4
Using GUI library called FLTK (Fast Light Tool Kit, “full tick”).

```Output:

```

[code language=”cpp”]
// Philipp Siedler
// Bjarne Stroustrup’s PP
// Chapter 12 Exercise 4

#include "Simple_window.h"
#include "Graph.h"
using namespace Graph_lib;

int main()
try
{
Point tl(100, 100);
Simple_window win(tl, 600, 600, "Canvas");

Graph_lib::Rectangle rect0(Point(0, 0), 200, 200);
Graph_lib::Rectangle rect1(Point(200, 0), 200, 200);
Graph_lib::Rectangle rect2(Point(400, 0), 200, 200);

Graph_lib::Rectangle rect3(Point(0, 200), 200, 200);
Graph_lib::Rectangle rect4(Point(200, 200), 200, 200);
Graph_lib::Rectangle rect5(Point(400, 200), 200, 200);

Graph_lib::Rectangle rect6(Point(0, 400), 200, 200);
Graph_lib::Rectangle rect7(Point(200, 400), 200, 200);
Graph_lib::Rectangle rect8(Point(400, 400), 200, 200);

rect0.set_fill_color(Color::black);
rect1.set_fill_color(Color::white);
rect2.set_fill_color(Color::black);

rect3.set_fill_color(Color::white);
rect4.set_fill_color(Color::black);
rect5.set_fill_color(Color::white);

rect6.set_fill_color(Color::black);
rect7.set_fill_color(Color::white);
rect8.set_fill_color(Color::black);

win.attach(rect0);
win.attach(rect1);
win.attach(rect2);

win.attach(rect3);
win.attach(rect4);
win.attach(rect5);

win.attach(rect6);
win.attach(rect7);
win.attach(rect8);

win.wait_for_button();
}
catch (exception& e) {
cout << e.what() << endl;
return 1;
}
catch (…) {
cout << "Exiting" << endl;
return 2;
}
[/code]