玫瑰花源代码

#include<dos.h> 

#include<graphics.h>

#include<math.h> 

/*õ¹å»¨*/ 

#define FNX(x) (int)(xo+(x)*1.0) 

#define FNY(y) (int)(getmaxy()-(yo+(y)*1.0)) 

#define FNX2(phi) cos(phi)*ac-sin(phi)*bs 

#define FNY2(phi) cos(phi)*as+sin(phi)*bc 



/*»­ÐýתµÄÍÖÔ²*/ 

void elli(int xo,int yo,int a,int b,double theta) 

{ 

int i; 

double da,c,s,ac,as,bc,bs,xf,yf,phi,x,y; 

theta=theta*0.01745; 

da=3*0.1745; 

c=cos(theta);s=sin(theta); 

ac=a*c;as=a*s;bc=b*c;bs=b*s; 

x=FNX2(0);y=FNY2(0); 

moveto(FNX(x),FNY(y)); 

for(i=1;i<=360;i++) 

{ 

phi=i*da;xf=x*cos(phi)*0.1;yf=b*sin(phi)*0.1; 

x=FNX2(phi);y=FNY2(phi); 

lineto(FNX(x),FNY(y)); 

} 

} 



/*»¨*/ 

void hua(int x,int y)