更新时间：2024-03-14 23:51
函数名: linerel
函数名: linerel
功 能: 从当前位置点(CP)到与CP有一给定相对距离的点画一直线
用 法: void far linerel(int dx, int dy);
#include
#include
#include
#include
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
char msg[80];
/* initialize graphics and local variables */
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk)
{
grapherrormsg(errorcode));
getch();
exit(1);
}
/* move the C.P. to location (20, 30) */
moveto(20, 30);
/* create and output a
message at (20, 30) */
outtextxy(20, 30, msg);
/* draw a line to a point a relative
distance away from the current
value of C.P. */
linerel(100, 100);
/* create and output a message at C.P. */
outtext(msg);
/* clean up */
getch();
closegraph();
return 0;
}