能帮我注释一下每行的意思不 谢谢大神
#include <graphics.h>#include <stdio.h>
void main()
{
int gdriver=DETECT,gmode;
initgraph(&gdriver,&gmode,"c:\\tc");
cleardevice();
line(50,120,480,120);
line(480,120,480,360);
line(480,360,160,360);
line(160,360,160,120);
getchar();
closegraph();
};
