#include "graphics.h"用法技术

#include "stdio.h"
#include "graphics.h"
main()
{
int i,j,driver=VGA,mode=VGAHI;
initgraph(&driver,&mode,"");
setbkcolor(YELLOW);
for(i=50;i<=230;i+=20)
　 for(j=50;j<=230;j++)
　 putpixel(i,j,1);
for(j=50;j<=230;j+=20)
　 for(i=50;i<=230;i++)
　 putpixel(i,j,1);

}

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【程序63】
题目：画椭圆ellipse　　　
1.程序分析：
2.程序源代码：
#include "stdio.h"
#include "graphics.h"
#include "conio.h"
main()
{
int x=360,y=160,driver=VGA,mode=VGAHI;
int num=20,i;
int top,bottom;
initgraph(&driver,&mode,"");
top=y-30;
bottom=y-30;
for(i=0;i
{
ellipse(250,250,0,360,top,bottom);
top-=5;
bottom+=5;
}
getch();
}