C/code/编写矩形类.cpp

#include <iostream>
#include <iomanip>
using namespace std;

class Rectangle
{
public:
    Rectangle();
    Rectangle(float length, float width);
    ~Rectangle();
    float getArea();
    float getPerimeter();

private:
    float mLength;
    float mWidth;
};

Rectangle::Rectangle() : mLength(0), mWidth(0)
{
}

Rectangle::Rectangle(float length, float width) : mLength(length), mWidth(width)
{
}

Rectangle::~Rectangle()
{
}

float Rectangle::getArea()
{
    return mLength * mWidth;
}

float Rectangle::getPerimeter()
{
    return 2 * (mLength + mWidth);
}

int main()
{
    float m, n;
    cout << "Input the Length and Width: ";
    cin >> m >> n;
    Rectangle r1(m, n);
    cout << "The Area is: " << r1.getArea() << endl;
    cout << "The Perimeter: " << r1.getPerimeter() << endl;

    return 0;
}