C 实战练习题目56

 1 #include <graphics.h> //VC6.0中是不能运行的，要在Turbo2.0/3.0中  
 2 int main()   
 3 {  
 4     int driver,mode,i;   
 5     float j=1,k=1;   
 6     driver=VGA;  
 7     mode=VGAHI;   
 8     initgraph(&driver,&mode,"");   
 9     setbkcolor(YELLOW);   
10     for(i=0;i<=25;i++)   
11     {   
12         setcolor(8);   
13         circle(310,250,k);   
14         k=k+j;   
15     j=j+0.3;   
16     }   
17     return 0;  
18 }