#include "stdlib.h"
#include "graphics.h"
#include "stdio.h"
#include "math.h"
#include "conio.h "
#define PI 3.1425926
main()
{
int gdriver=DETECT,gmode,errorcode;
int a[10],b[10],x,y,c,r,i,j,t;
double rad = 0.0;
/* initialize graphics and local variables */
initgraph(&gdriver , &gmode ,"");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error : %s/n",grapherrormsg(errorcode));
printf("Please any key to halt:");
getch();
exit(1); /* terminate with an error code */
}
randomize();
for(;!kbhit();)
{
x=rand()%500+100; /*随机中心坐标州纯*/
y=rand()%300+100;
for(r = 0 ;r <= 8 ; r++ ) /*烟花的大小设定*/
{
for(i = 0,rad = 0.0 ; rad < 2*PI; rad += 0.78 ) /*设定坐标*/
{
a[i++] = x + (int)r *10* cos(rad);
b[ i ] = y + (int)r *10* sin(rad);
}
t = i;
for(i=1;i<t;i++)
{
c=rand()%13+1; /*各点的颜色随机*/
setcolor(c); /*功能:将当前图形屏幕的当前笔画颜色置为color.*/
circle(a[i],b[i],1);/* a[i],b[i] 为圆心 1 为半径 画圆 */
}
delay(10000);
delay(10000);
cleardevice();
函数名: cleardevice
功 能: 清除图形屏幕
用 法: void far cleardevice(void);
}
}
getch();
closegraph();
函数名: closegraph
功 能: 关闭图形系统
用 法: void far closegraph(void);
}
