c语言经典算法100例.rar

				/*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();
				     }