题解 | #点和圆的关系#
点和圆的关系
https://www.nowcoder.com/practice/fdbbd0aaf89f49818e9ee1afb02deb10
#include <cstdlib>
#include <iostream>
using namespace std;
// 点类
class Pointer {
private:
int x; // x 坐标
int y; // y 坐标
public:
void setX(int x) {
this->x = x;
}
int getX() {
return x;
}
void setY(int y) {
this->y = y;
}
int getY() {
return y;
}
};
// 圆类
class Circle {
private:
Pointer center; // 圆心
int radius; // 半径
public:
void setCenter(int x, int y) {
center.setX(x);
center.setY(y);
}
void setRadius(int radius) {
this->radius = radius;
}
// write your code here......
void isPointerInCircle(Pointer p){
int x = p.getX() - center.getX();
int y = p.getY() - center.getY();
if(abs(x)<this->radius&&abs(y)<this->radius)
cout << "in" << endl;
else if(abs(x)>this->radius||abs(y)>this->radius)
cout << "out" << endl;
else
cout << "on" << endl;
}
};
int main() {
// 键盘输入点的坐标
int x, y;
cin >> x;
cin >> y;
// 创建一个点
Pointer p;
p.setX(x);
p.setY(y);
// 创建一个圆
Circle c;
c.setCenter(5, 0);
c.setRadius(5);
// 判断点和圆的关系
c.isPointerInCircle(p);
return 0;
}