类和对象-封装案例.cpp

#include <iostream>
using namespace std;
//1、创建立方体类
class Cube
{
//2、设计属性
private:
    int m_L;
    int m_W;
    int m_H;
//3、设计行为 获取立方体面积和体积
public:
    void setL(int l)
    {
        m_L=l;
    }
    int getL()
    {
        return m_L;
    }
    void setW(int w)
    {
        m_W=w;
    }
    int getW()
    {
        return m_W;
    }
    void setH(int h)
    {
        m_H=h;
    }
    int getH()
    {
        return m_H;
    }

    int calculateS()
    {
        return 2*m_L*m_W+2*m_W*m_H+2*m_L*m_H;
    }
    int calculateV()
    {
        return m_L*m_W*m_H;
    }
    //利用成员函数判断两个立方体是否相等
    bool isSameByClass(Cube &c)
    {
        if( m_L == c.getL() && m_H == c.getW() && m_H == c.getH())
        {
            return true;
        }
        return false;
    }
};
//利用全局函数判断两个立方体是否相等
bool isSame(Cube &c1, Cube &c2) //引用传递不会拷贝一份数据出来
{
    if(c1.getL() == c2.getL() && c1.getW() == c2.getW() && c1.getH() == c2.getH())
    {
        return true;
    }
    return false;
}
int main()
{
    Cube c1;
    c1.setL(10);
    c1.setW(10);
    c1.setH(10);
    cout << "c1的面积为: "<<c1.calculateS() << endl;
    cout << "c1的体积为: "<< c1.calculateV()<< endl;
    Cube c2;
    c2.setL(10);
    c2.setW(10);
    c2.setH(12);
    //利用全局函数判断，判断两个立方体是否相等
    bool ret = isSame(c1,c2);
    if(ret)
    {
        cout << "c1和c2是相等的" << endl;
    }
    else 
    {
        cout << "c1和c2不相等" << endl;
    }
    ret = c1.isSameByClass(c2);
    if(ret)
    {
        cout << "成员函数判断：c1和c2是相等的" << endl;
    }
    else 
    {
        cout << "成员函数判断：c1和c2不相等" << endl;
    }
    //利用成员函数判断,判断两个立方体是否相等
}