在不改变现有main.cpp的情况下，写一个shape.h和一个shape.cpp来计算两个长方形的大小同时用is_larger比较大小，同时重载运算符 >，下面是main.cpp

#include<iostream>
#include"shape.h"

using namespace std;

int main()
{
// construct a point at position (1,1)
// constuctor of class "Point" is called
Point p(1,1); 

// construct two rectangles using different parameters
Rectangle r1; //r1 is initialized of size 1X1 at the origin 
Rectangle r2(p,0.3,2.9);

// move rectangle r1
// shift the rectangle horizontally by 0.2
// shift the rectangle vertically by -1.3
r1.move(0.2,-1.3);

// compute the areas using member function .area()
cout << r1.area() << endl;
cout << r2.area() << endl;

// compare whether r1 has a larger area than r2?
cout << r1.is_larger(r2) << endl;

// overloading the member function .is_larger() with >
cout << (r1 > r1) << endl;
cout << (r1 > r2) << endl;

return 0;
}

问题解决的话，请点下采纳

#pragma once

class Point
{
private:
    double x;
    double y;
public:
    Point() { x = y = 0; }
    Point(double a, double b) { x = a; y = b; }
    Point(Point& pt) { x = pt.x; y = pt.y; }
    void move(double a, double b)
    {
        x += a;
        y += b;
    }
};

class Rectangle
{
private:
    Point p;
    double w;
    double h;
public:
    Rectangle() : p(0, 0), w(1), h(1) { }
    Rectangle(Point pt, double a, double b) 
    {
        p = pt;
        w = a;
        h = b;
    }
    void move(double a, double b)
    {
        p.move(a, b);
    }
    double area()
    {
        return w * h;
    }
    bool is_larger(Rectangle& another)
    {
        return area() > another.area();
    }
    bool operator>(Rectangle& another)
    {
        return is_larger(another);
    }
};

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