3_5.c

浙大《C语言设计基础课程设计》中的例程 有些比较好的代码！

/*------例程3-5------*/
#include <graphics.h>
#include <stdio.h>
#include <conio.h>
main()
{
  int graphdriver;
  int graphmode;
  clrscr();
  detectgraph(&graphdriver,&graphmode);
  switch(graphdriver)		{
     case CGA:printf("\nGraphics adapter is CGA,now set as CGAC1 mode");
	      graphmode=1; 		/*	设置成低分辨模式	*/
	      break;
     case EGA:printf("\nGraphics adapter is EGA,now set as EGALO mode");
	      graphmode=0;		/*	设置成低分辨模式	*/
	      break;
     case VGA:printf("\nGraphics adapter is VGA,now set as VGAMED mode");
	      graphmode=1;		/*	设置成中分辨模式	*/
	      break;
     case -2:
	      printf("\nGraphics adapter not installed");
	      exit(1);
     default:
	     printf("\nGraphics adapter is not CGA, EGA or VGA");
  }
  initgraph(&graphdriver,&graphmode,"");
  /*接下来就可以作图了,在此忽略*/
  getch();
  closegraph();
}
/*------例程3-5结束------*/