09_04.cpp

一些C++的课件和实验源代码

// 09_04.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "container.h"
#include <iostream>
#include <list>
using namespace std;


// 容器管理类
class containerManager{
protected:
	list<container*> m_lstContainers;

	container* CreateContainer(int type, int val1 = 0, int val2 = 0);
public:
	void Insert();
	void Remove();
	void RemoveAll();
	void ShowInfo();
};


containerManager	manager;	// 容器管理对象
int nOperation = 0;				// 当前选择的操作
static int nContainerID = 0;	// 当前的最大容器号,确保容器号不重复


// 根据输入参数创建不同类型的对象
container* containerManager::CreateContainer(int type, int val1, int val2)
{
	switch(type){
	case 1:
		return new cube(++nContainerID, val1);
		break;
	case 2:
		return new sphere(++nContainerID, val1);
		break;
	case 3:
		return new cylinder(++nContainerID, val1, val2);
		break;
	default:
		return NULL;
		break;
	}
}

// 添加新容器
void containerManager::Insert()
{
	int type = 0;
	int val1 = 0;
	int val2 = 0;

	while(type < 1 || type > 3){
		cout << "请输入容器类型: 1. 立方体   2. 球体     3. 圆柱体" << endl;
		cin >> type;
	}

	switch(type){
	case 1:
		while(val1 <= 0){
			cout << "请输入立方体边长: ";
			cin >> val1;
		}
		break;
	case 2:
		while(val1 <= 0){
			cout << "请输入球体半径: ";
			cin >> val1;
		}
		break;
	case 3:
		while(val1 <= 0){
			cout << "请输入圆柱体底面半径: ";
			cin >> val1;
		}
		while(val2 <= 0){
			cout << "请输入圆柱体高度: ";
			cin >> val2;
		}
		break;
	default:
		break;
	}

	// 在链表尾插入新节点
	container* pc = CreateContainer(type, val1, val2);
	m_lstContainers.push_back(pc);
}

// 删除指定容器号的容器
void containerManager::Remove()
{
	int id = 0;
	while(id <= 0){
		cout << "请输入要删除的容器号: ";
		cin >> id;
	}

	// 遍历链表查找该容器
	list<container*>::iterator itFind = m_lstContainers.begin();
	while(itFind != m_lstContainers.end()){
		if((*itFind)->GetID() == id){	// 找到该容器
			itFind = m_lstContainers.erase(itFind);
			cout << "succeeed: 删除容器号为" << id <<"的容器成功." << endl;
			return;
		}
		itFind++;
	}

	// 没找到该容器
	cout << "error: 没找到容器号为" << id << "的容器." << endl;
}

// 删除所有容器
void containerManager::RemoveAll()
{
	// 释放各节点
	list<container*>::iterator itFind = m_lstContainers.begin();
	while(itFind != m_lstContainers.end()){
		delete (*itFind);
		itFind++;
	}	

	// 清空链表
	m_lstContainers.clear();

	cout << "succeed: 删除所有容器完毕." << endl;
}

// 显示所有容器的信息
void containerManager::ShowInfo()
{
	if(m_lstContainers.size() == 0){
		cout << "error: 目前没有任何容器." << endl;
	}

	list<container*>::iterator itFind = m_lstContainers.begin();
	while(itFind != m_lstContainers.end()){
		(*itFind)->Show();	// 根据指向的不同调用不能类域的Show函数
		itFind++;
	}	
}




void PrintMenu()
{
	cout << endl << endl;
	cout << "1. 添加新容器" << endl;
	cout << "2. 删除指定容器" << endl;
	cout << "3. 删除所有容器" << endl;
	cout << "4. 显示容器信息" << endl;
	cout << "5. 退出系统" << endl;
	cout << "请选择您所需的操作: ";
}

int main(int argc, char* argv[])
{
	cout << "容器管理系统 version 1.0" << endl;
	cout << "王  涛   计算机与信息技术学院    北京交通大学" << endl;
	
	while( nOperation != 5 ){
		// 让用户选择操作
		while( nOperation < 1 || nOperation > 5){
			PrintMenu();
			cin >> nOperation;
		}

		// 根据功能选择进行不同操作
		switch( nOperation ){
			case 1:		manager.Insert();		break;
			case 2:		manager.Remove();		break;
			case 3:		manager.RemoveAll();	break;
			case 4:		manager.ShowInfo();		break;
			default:	break;
		}

		// 复位操作选择
		if( nOperation != 5 ){
			nOperation = 0;
		}
	}

	return 0;
}