EFFETS VISUELS RECTANGULAIRES MODE GRAPHIQUE TURBO C++2

//  PROGRAMME EN C SOUS DOS TURBO C++2 BORLAND
//  ecrit le 25-06-2002 par cmarsc
//  EFFETS VISUELS MODE GRAPHIQUE

#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <time.h>
#include <dos.h>

int main(void)
{
   int gdriver = DETECT, gmode, errorcode;
   int i1,i2,MAXI;
   time_t t;
   srand((unsigned) time(&t));

   initgraph(&gdriver, &gmode, "c:\\tc\\bgi");

   errorcode = graphresult();
   if (errorcode != grOk)
   {
      printf("Graphics error: %s\n", grapherrormsg(errorcode));
      printf("Press any key to halt:");
      getch();
	  exit(1);
   }
	  MAXI = (getmaxy()/2)-5;
do {
	  // EFFET DEGRESSIF
	  setcolor(rand () %15);

	  for (i1 = 0; i1 < MAXI; i1 +=5) {
	  rectangle (1+i1,1+i1,getmaxx()-i1,getmaxy()-i1);
	  delay(30);
	  }
	  // EFFET PROGRESSIF
	  setcolor(rand () %15);
	  for (i2 = 0; i2 < MAXI; i2 +=5) {
	  rectangle (1+i1-i2,1+i1-i2,getmaxx()-i1+i2,getmaxy()-i1+i2);
	  delay(30);
	  }

} while (!kbhit());

   closegraph();
   return 0;
}