//編寫一個簡單的類。包含建構函式，成員函式等。
#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<<"長寬分別為："<<length<<","<<wide<<endl;
}
int main()
{
	Rec rec1(8,5),rec2(18,6);
	cout<<"長方形1";
	rec1.Print();
	cout<<"  其面積為："<<rec1.Area();
	cout<<endl;
	cout<<"長方形2";
	rec2.Print();
	cout<<"  其面積為："<<rec2.Area();
	cout<<endl;
	return 0;
}