硬件测试

/*1-1.c*/
     #include "graphics.h"
     main( )
       {
          int gdriver, gmode;
          detectgraph(&gdriver, &gmode);     /*自动测试硬件*/
          printf("driver is %d, mode is %d\n", gdriver,gmode);    /*输出测试结果*/
          getch();
          initgraph(&gdriver, &gmode, "");     /* 根据测试结果初始化图形*/
          circle(320,240,50);
          circle(320,240,80);
          circle(320,240,110);
          getch();
          closegraph();
       }

/*1-2.c*/
     #include "graphics.h"
     main()
     {
           int gdriver=DETECT, gmode;
           initgraph(&gdriver, &gmode, "");
           circle(320,240,50);
           circle(320,240,80);
           circle(320,240,110);
           getch();
           closegraph();
        }
/*1-3.c*/
     #include "stdio.h"
     #include "graphics.h"
     main()
     {
          int gdriver, gmode, i,j;
          gdriver=DETECT;
          initgraph(&gdriver, &gmode, ""); /*图形初始化*/
          setbkcolor(0);                   /*设置图形背景*/
          cleardevice();
          for(i=0; i<=15; i++)
          {
            setcolor(i);                   /*设置不同作图色*/
            circle(319, 239, 20+i*15);     /*画半径不同的圆*/
            delay(3000);                   /*延迟3000毫秒*/
          }
          for(i=0; i<=15; i++)
          {
             setbkcolor(i);                /*设置不同背景色*/
             cleardevice();
       for(j=0; j<=15;j++)
          {
            setcolor(j);                   /*设置不同作图色*/
            circle(319, 239, 20+j*15);     /*画半径不同的圆*/
            delay(3000);
             }
          }
      getch();
      closegraph();
      }

/*1-4.c*/
     #include "stdlib.h"
     #include "graphics.h"
     main()
     {
          int gdriver=DETECT, gmode, i;
          initgraph(&gdriver, &gmode, "");
          setbkcolor(RED);
          cleardevice();
          setcolor(BLUE);
          circle(320,240,50);
          circle(320,240,100);
          setlinestyle(0, 0, 3);   /*设置三点宽实线*/
          setcolor(2);
          rectangle(220, 140, 420, 340);
          setcolor(WHITE);
          setlinestyle(4, 0xaaaa, 1);   /*设置一点宽用户定义线*/
          line(220, 240, 420, 240);
          line(320, 140, 320, 340);
          getch();
          closegraph();
     }