Question

懂C语言的高手进来帮帮忙！ 有关计算机图形学，画一辆会动的自行车程序。我的编译没错，可是不能运行。

我是用win tc的，帮我改一些。程序如下：
/* WIN-TC BGI 图形编程模板 */

#include "Conio.h"
#include "graphics.h"
#define closegr closegraph

void initgr(void) /* BGI初始化 */
{
int gd = DETECT, gm = 0; /* 和gd = VGA,gm = VGAHI是同样效果 */
registerbgidriver(EGAVGA_driver);/* 注册BGI驱动后可以不需要.BGI文件的支持运行 */
initgraph(&gd, &gm, "");
}

int main(void)
{ void *w1,*w2;
int i,k;

int x=500,y=300;

initgr(); /* BGI初始化 */
setbkcolor(6);

/*画前轮*/
circle(x/2,y/2,30);
for(k=0;k<=360;k+=30){
line( x/2,y/2,x/2+30*cos((x/2+k)*0.01745),y/2+30*sin((x/2+k)*0.01745));}

/*画后轮*/
circle(x/2+100,y/2,30);
for(k=0;k<=360;k+=30){
line( x/2+100,y/2,x/2+100+30*cos((x/2+100+k)*0.01745),y/2+30*sin((x/2+100+k)*0.01745));}

circle(x/2+50,y/2,8);
line(x/2+50,y/2,x/2+100,y/2);
line(x/2,y/2,x/2+20,y/2-70);
line(x/2+50,y/2,x/2+80,y/2-60);
line(x/2+100,y/2,x/2+80,y/2-60);
line(x/2+50,y/2,x/2+20,y/2-70);
line(x/2+20,y/2-70,x/2+20,y/2-90);
circle(x/2+20,y/2-90,4);
line(x/2+70,y/2-60,x/2+90,y/2-60);
w1=malloc(imagesize(x/2-130,y/2-90,x/2+130,y/2+30));
getimage(x/2-130,y/2-90,x/2+130,y/2+30,w1);

/*画前轮*/
circle(x/2,y/2,30);
for(k=0;k<=360;k+=30){
line( x/2,y/2,x/2+30*cos((x/2+k)*0.01745),y/2+30*sin((x/2+k)*0.01745));}

/*画后轮*/
circle(x/2+100,y/2,30);
for(k=0;k<=360;k+=30){
line( x/2+100,y/2,x/2+100+30*cos((x/2+100+k)*0.01745),y/2+30*sin((x/2+100+k)*0.01745));}

circle(x/2+50,y/2,8);
line(x/2+50,y/2,x/2+100,y/2);
line(x/2,y/2,x/2+20,y/2-70);
line(x/2+50,y/2,x/2+80,y/2-60);
line(x/2+100,y/2,x/2+80,y/2-60);
line(x/2+50,y/2,x/2+20,y/2-70);
line(x/2+20,y/2-70,x/2+20,y/2-90);
circle(x/2+20,y/2-90,4);
line(x/2+70,y/2-60,x/2+90,y/2-60);
w2=malloc(imagesize(x/2-130,y/2-90,x/2+130,y/2+30));
getimage(x/2-130,y/2-90,x/2+130,y/2+30,w2);

for (i=520;i>0;i--)
{
if (i%2==0)
putimage(i,175,w1,COPY_PUT);
else
putimage(i,175,w2,COPY_PUT);
putimage(i,175,w1,COPY_PUT);
line(0,330,730,330);
}

getch(); /* 暂停一下，看看前面绘图代码的运行结果 */
closegr(); /* 恢复TEXT屏幕模式 */
return 0;
}

Answer 1

#include<graphics.h>
#include<stdlib.h>
#define PI 3.14159

void WhirlCircle(int x,int y,int r)
{
int i;

clearviewport();
while(!kbhit())
{
for(i=1;i<=21600;i++)
{
if(i%5400==0) setcolor(random(14)+1);
line(x,y,x+r*cos(i*PI/10800),y-r*sin(i*PI/10800));
}
}
getch();
}

void main()
{
int gd=DETECT,gm;

initgraph(&gd,&gm,"");

WhirlCircle(320,240,100);
closegraph();
}