【C++】编写一个简单的类。包含构造函数，成员函数等。

//编写一个简单的类。包含构造函数，成员函数等。#include <iostream>using namespace std;class Rec{public:Rec(int l,int w);int Area();void Print();private:int length,wide;};Rec::Rec(int l,int w){length=l;wide=w;}int Rec::Area(){return length*wide;}void Rec::Print(){cout<<"长宽分别为："<<length<<","<<wide<<endl;}int main(){Rec rec1(8,5),rec2(18,6);cout<<"长方形1";rec1.Print();cout<<"  其面积为："<<rec1.Area();cout<<endl;cout<<"长方形2";rec2.Print();cout<<"  其面积为："<<rec2.Area();cout<<endl;return 0;}