1. #include <allegro.h>
2. #include <cstdlib>
3. #include <ctime>
4. #include <windows.h>
5.  
6. #define HEIGHT 640
7. #define WIDTH 480
8.  
9. void draw(int h, int w);
10. void draw_random();
11.  
12. int main()
13. {
14.     allegro_init();
15.     srand(time(NULL));
16.  
17.     set_gfx_mode(GFX_AUTODETECT_WINDOWED, 640, 480, 0, 0);
18.     install_keyboard();
19.  
20.     clear_to_color(screen,makecol(255,255,255));
21.  
22.     draw(0,0);
23.     Sleep(3000);
24.     clear_to_color(screen,makecol(255,255,255));
25.     draw_random();
26.  
27.     while((readkey()& 0xff) != 27);
28.         allegro_exit();
29.     return 0;
30. }
31. END_OF_MAIN()
32.  
33. void draw(int h, int w)
34. {
35.     circle(screen,screen->w/2,screen->h/2,100, makecol(40,40,40));
36.  
37.     rect(screen,(screen->w/3),(screen->h/3),(screen->w/1.5),(screen->h/1.5), makecol(80,80,80));
38.  
39.     triangle(screen,(screen->w/3), (screen->h/2), (screen->w/2), (screen->h/4), (screen->w/1.5), (screen->h/2), makecol(120,120,120));
40.  
41.     line(screen, screen->w/4, screen->h/4.5, screen->w/1.25, screen->h/4.5, makecol(200,200,200));
42.  
43.     line(screen, screen->w/4, screen->h/1.25, screen->w/1.25, screen->h/1.25, makecol(200,200,200));
44.  
45.     line(screen, screen->w/4, screen->h/1.25, screen->w/4, screen->h/4.5, makecol(200,200,200));
46.  
47.     line(screen, screen->w/1.25, screen->h/1.25, screen->w/1.25, screen->h/4.5, makecol(200,200,200));
48.  
49. }
50.  
51. void draw_random()
52. {
53.     int x1 = rand()%screen->w;
54.     int y1 = rand()%screen->h;
55.  
56.     int random = rand()%screen->h/3;
57.  
58.     circle(screen, rand()%screen->w, rand()%screen->h, rand()%320, makecol(rand()%255,rand()%255,rand()%255));
59.  
60.     line(screen, rand()%screen->w, rand()%screen->h, rand()%screen->w, rand()%screen->h, makecol(rand()%255,rand()%255,rand()%255));
61.  
62.     rect(screen, x1, y1, x1+random , y1+random, makecol(rand()%255,rand()%255,rand()%255));
63.  
64.     triangle(screen, x1, y1, x1+random, y1, (x1+random/2), (y1+random), makecol(rand()%255,rand()%255,rand()%255));
65. }
66.