random cubes

random.pde

int square_top_x = 10;
int square_top_y = 20;
int square_bot_x = 100;
int square_bot_y = 200;

void setup()
{
  size(500, 500);
}

void draw()
{
   square_bot_x = int(random(width));
   square_bot_y = int(random(height));
   rect(square_top_x, square_top_y, square_bot_x, square_bot_y);
}