用C语言画雪花

#include
#include
struct Snow
{
int x;
int y;
int speed;
}snow[100];
int snownum=0;
int size;
int change=10;
void*save1,*save2;
void Copy();
void DrawSnow();
void Pr();
void main(void)
{int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\\tc");
Copy();
DrawSnow();
geth();
closegraph();}
void Copy()
{setcolor(0);
setfillstyle(SOLLD_FILL,15);
fillellipse(200,200,4,4);
size=imagesize(196,196,204,204);
save1=malloc(size);
save2=malloc(size);
getimage(196,196,204,204,save1);
getimage(96,96,104,104,save2);
}
void Pr()
{int s[15]={0,100,150,200,150,200,250,150,250,300,250,150,100,250,350};
setcolor(change/10);
settextstyle(0,0,4);
outtextstyle(100,200,"Merry Christmas");
sound(s[change/10]);
}
void DrawSnow()
{int i;
int sx[62];
randomise();
for(i=0;i<62;i++)
sx[i]=(i+2)*10;
cleardevice();
while(!kbhit())
{Pr();
if(snownum!=100)
{snow[snownum].speed=2+random(5);
i=random(62);
snow[snownum].x=sx[i];
snow[snownum].y=10-random(100);
}
for(i=0;iputimage(snow[i].x,snow.y,save2,COPY_PUT);
Pr();
if(snownum!=100)
snownum++;
setfillstyle(SOLLD_FILL,15);
for(i=0;i{snow[i].y+=snow[i].speed;
putimage(snow[i].x,snow[i].y,save1,COPY_PUT);
if(snow[i].y>500)
snow[i].y=10-random(200);
}
change++;
if(change==140)
change=10;
}
nosound();
}