定义一个point（点）类，公有成员两数至少包括 set point、move point：该类的私有数据成员有点的位置和颜色，调用所有定义的公有函数，输出点的位置和颜色

以下是一个可能的实现：

#include <iostream>
using namespace std;

class Point {
public:
    Point(int x = 0, int y = 0, string color = "black") {
        this->x = x;
        this->y = y;
        this->color = color;
    }

    void setPoint(int x, int y) {
        this->x = x;
        this->y = y;
    }

    void movePoint(int dx, int dy) {
        x += dx;
        y += dy;
    }

    void print() {
        cout << "Point: (" << x << ", " << y << "), color: " << color << endl;
    }

private:
    int x, y;
    string color;
};

int main() {
    Point p(10, 20, "red");
    p.print();

    p.setPoint(30, 40);
    p.print();

    p.movePoint(5, -10);
    p.print();

    return 0;
}

输出：

Point: (10, 20), color: red
Point: (30, 40), color: red
Point: (35, 30), color: red