c语言 用circle画圆形

[c]代码库

/*circle*/
#include "graphics.h"
main()
{
	int driver,mode,i;
	float j=1,k=1;
	driver=VGA;
	mode=VGAHI;
	initgraph ( &driver,&mode,"" );
	setbkcolor ( YELLOW );
	for ( i=0; i<=25; i++ )
	{
		setcolor ( 8 );
		circle ( 310,250,k );
		k=k+j;
		j=j+0.3;
	}
}