用c++设计直线类,然后判断直线与圆的位置关系

网友回答

#include
#include
class line //定义直线类
{public:
\x05float a,b,c; //标准式
};class circle //定义圆类
{public:
\x05float x,y,r;//圆心及半径
};int main(int argc,char**argv)
{\x05line myline;
\x05circle mycircle;
\x05\x05coutmyline.a;
\x05coutmyline.b;
\x05coutmyline.c;
\x05coutmycircle.x;
\x05coutmycircle.y;
\x05coutmycircle.r;
\x05float mydistance;
\x05mydistance=fabs(myline.a*mycircle.x+myline.b*mycircle.y+myline.c)/sqrt(myline.a*myline.a+myline.b*myline.b);//计算圆心与直线的距离
\x05//比较R与圆心到直线的距离
\x05if (mydistance