本實例使用 rectangle 繪製一組同心矩形,並添加文字、分隔線和外接圓。
// Created by www.runoob.com on 15/11/9.
// Copyright © 2015年 菜鳥教程. All rights reserved.
//
#include "graphics.h"
int main() {
int x0, y0, y1, x1, driver, mode, i;
driver = VGA; mode = VGAHI;
initgraph(&driver, &mode, "");
setbkcolor(YELLOW);
x0 = 263; y0 = 263; y1 = 275; x1 = 275;
for (i = 0; i <= 18; i++) {
setcolor(1);
rectangle(x0, y0, x1, y1);
x0 -= 5; y0 -= 5; x1 += 5; y1 += 5;
}
settextstyle(DEFAULT_FONT, HORIZ_DIR, 2);
outtextxy(150, 40, "How beautiful it is!");
line(130, 60, 480, 60);
setcolor(2);
circle(269, 269, 137);
}
黃色背景上,藍色同心矩形向外擴展,紅色文字、白色分隔線、綠色大圓構成裝飾畫面。