#include "stdlib.h"
#include"graphics.h"
main()
{int gd=DETECT,gr,a[8],b[8],x,y,i,j,c;
initgraph(&gd,&gr,"");
randomize();
for(;!kbhit();)
{x=rand()%500+100; /*隨機中心坐標*/
y=rand()%300+100;
a[0]=x; /*各點坐標的計算,我的煙花圖形沒能是圓的*/
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