moverel

基本介紹

• 中文名：moverel
• 功 能：將當前位置(CP)移動一相對距離
• 用 法：void far moverel
• 程式列：#include <graphics.h>

函式名

moverel

簡介

功 能: 將當前位置(CP)移動一相對距離

用 法: void far moverel(int dx, int dy);

程式例:

#include <graphics.h>

#include <stdlib.h>

#include <stdio.h>

#include <conio.h>

int main(void)

{

/* request auto detection */

int gdriver = DETECT, gmode, errorcode;

char msg[80];

/* initialize graphics and local variables */

initgraph(&gdriver, &gmode, "");

/* read result of initialization */

errorcode = graphresult();

if (errorcode != grOk) /* an error occurred */

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1); /* terminate with an error code */

}

/* move the C.P. to location (20, 30) */

moveto(20, 30);

/* plot a pixel at the C.P. */

putpixel(getx(), gety(), getmaxcolor());

/* create and output a message at (20, 30) */

sprintf(msg, " (%d, %d)", getx(), gety());

outtextxy(20, 30, msg);

/* move to a point a relative distance */

/* away from the current value of C.P. */

moverel(100, 100);

/* plot a pixel at the C.P. */

putpixel(getx(), gety(), getmaxcolor());

/* create and output a message at C.P. */

sprintf(msg, " (%d, %d)", getx(), gety());

outtext(msg);

/* clean up */

getch();

closegraph();

return 0;

}