c语言放烟花代码

c语言放烟花代码

#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*/ 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); }