ScreenHunter_40 Aug. 21 09.53

github.com/FeetWetCoding/FeetWetCoding/blob/master/exerci...

 

// copyright (c) 2011 Robert Holder, Janice Dugger.

// See HELP.html included in this distribution.

 

#include

 

// ==========================================

// = THIS IS THE SOLUTION CODE =

// = THIS IS *NOT* THE EXERCISE CODE =

// = (If you meant to look at the exercise =

// = it's in the directory above this one.) =

// ==========================================

 

void C01S05_OYO3Soln::runExercise()

{

int x=0, y=0;

int step=10;

 

while ( x < 200 )

{

x += step;

y = x;

fwcRectangle(x, y, 400-(x*2), 400-(y*2), BLUE, 2);

fwcRectangle(x+5, y+5, 390-(x*2), 390-(y*2), RED, 2);

}

seeout << "Makes for kind of a psychedelic optical illusion, huh?\n";

seeout << "That's not your screen flickering, that's some property of how\n";

seeout << "the hardware in your eyes and brain process lines and colors!\n\n";

seeout << "Hint: you can use two while loops if you want, but it is\n";

seeout << "possible to do it with one. This one takes a little fiddling\n";

seeout << "with to get right. You can do it! :-)\n";

}

Done