综合强化练习-仓库货物管理（链表、static、对象）

蔚落 2022-03-19 15:58 38阅读 0赞

## 问题描述 ##

*  一个仓库具有 进货和出货两种操作，每个货物有自己的重量，最后统计仓库的总重量，货物的进与出通过终端进行交互。
 *  货物与货物之间通过链表连接，这样便于管理，类似于：  
    ![在这里插入图片描述][20190217214624414.png]

## 代码 ##

#include "stdafx.h"
    #include <iostream>
    
    using namespace std;
    
    class Goods
    { 
    public:
    	Goods(int w):m_weight(w)
    	{ 
    		next = NULL;
    		total_weight += m_weight;
    		cout << "入库了货物重量是：" << m_weight << endl;
    	}
    
    	static int Get_Total()
    	{ 
    		return total_weight;
    	}
    
    	~Goods()
    	{ 
    		total_weight -= m_weight;
    		cout << "出库了货物重量是：" << m_weight << endl;
    	}
    
    	Goods* next;
    
    private:
    	int m_weight;
    	static int total_weight;
    };
    
    int Goods::total_weight = 0;
    
    
    
    
    void Buy(Goods* &head, int weight)  //进货
    { 
    	Goods* new_good = new Goods(weight);
    	if (head == NULL)
    	{ 
    		head = new_good;
    	}
    	else
    	{ 
    		new_good->next = head;
    		head = new_good;
    	}
    }
    
    
    void Sale(Goods* &head)  //出货
    { 
    	if (head == NULL)
    	{ 
    		cout << "仓库中没有货物了" << endl;
    		return;
    	}
    	else //在头部删除
    	{ 
    		Goods* tmp = head;
    		head = head->next;     //当最后一个的时候head->next = NULL, 下次再出货上面条:if (head == NULL)就满足
    		delete tmp;
    	}
    }
    
    int main(void)
    { 
    
    	cout << "1: 进货" << endl;
    	cout << "2: 出货" << endl;
    	cout << "3: 退出" << endl;
    
    	int weight;
    	Goods* head=NULL;
    
    	int choice;
    	cin >> choice;
    	do
    	{ 
    		switch (choice)
    		{ 
    			case 1:
    				cout << "请输入货物重量" << endl;
    				cin >> weight;
    				Buy(head,weight);
    				break;
    
    			case 2:
    				Sale(head);
    				break;
    
    		    default:
    			    return 0;
    		}
    
    
    		cout << "当前仓库总重量 : " << Goods::Get_Total() << endl;
    		cout << endl;
    		cin >> choice;
    	} while (choice != 3);
    	
    
        return 0;
    }

结果：

![在这里插入图片描述][20190217215959232.png]

[20190217214624414.png]: /images/20220319/8a35ba2151894e5992dee5fe3438ac4e.png
[20190217215959232.png]: /images/20220319/bd37ab6fbbff45a2a1cc7739c3265199.png