C++链表类的封装详情介绍
目录
1.CList.h
2.CList.cpp
3.main.cpp
1.CList.h#ifndef CLIST_H
#define CLIST_H
class CNode //节点类
{
public:
CNode();
~CNode();
void *data; //数据域 节点数据的地址
CNode *pnext; //指针域 保存下一个节点的地址
protected:
private:
};
class CList //链表类
{
public:
CList();
~CList();
void addList(void *data); //在尾部添加节点
int getListCount(); //获取节点的个数
int insertListByPos(int pos,void *data); //根据pos插入节点
int deleteListByPos(int pos); //删除节点
void *getNodeByPos(int pos); //获取节点数据
void *freeList(); //释放链表
protected:
private:
CNode *head; //链表头
int count; //节点个数
};
#endif
2.CList.cpp
#include"CList.h"
#include<stdio.h>
#include<cstring>//memset头文件
CNode::CNode()
{
this->data = NULL;
this->pnext = NULL;
}
CNode::~CNode()
{
}
CList::CList()
{
this->head = new CNode;
this->count = 0;
}
CList::~CList()
{
}
//在尾部添加节点
void CList::addList(void *data)
{
CNode *tmp = this->head;
while(tmp->pnext!=NULL)
{
tmp = tmp->pnext;
}
CNode *newNode = new CNode;//创建新节点
tmp->pnext = newNode;
newNode->data = data;
++(this->count);
}
//获取节点的个数
int CList::getListCount()
{
return this->count;
}
//根据pos插入节点
int CList::insertListByPos(int pos,void *data)
{
int num = 0;
CNode* tmp = this->head;
while(tmp->pnext!=NULL)
{
count++;
tmp = tmp->pnext;
if(pos == count)
{
CNode* newNode = new CNode; //新节点
memset(newNode,'\0',sizeof(CNode));
newNode->data = data;
newNode->pnext = tmp->pnext;
tmp->pnext = newNode;
return 1;
}
}
return 0;
}
//删除节点
int CList::deleteListByPos(int pos)
{
int count = 0;
CNode* tmp = head->pnext,*pre = head;
while(tmp!=NULL)
{
count++;
if(count == pos)
{
pre->pnext = tmp->pnext;
//tmp数据域释放掉
delete tmp->data;
delete tmp;
return 1;
}
pre = pre->pnext;
tmp = tmp->pnext;
}
return -1;
}
//获取节点数据
void* CList::getNodeByPos(int pos)
{
int count = 0;
CNode* tmp = head;
while(tmp->pnext!=NULL)
{
count++;
tmp = tmp->pnext;
if(pos == count)
{
return tmp->data;
}
}
return NULL;
}
//释放链表
void* CList::freeList()
{
CNode* tmp = head;
while(tmp!=NULL)
{
head = head->pnext;
delete tmp->data;
delete tmp;
tmp = head;
}
return this->head;
}
3.main.cpp
计算总节点数：
#include<iostream>
using namespace std;
#include"CTools.h"
#include "CLabel.h"
#include"CEdit.h"
#include"CButton.h"
#include"CtrBase.h"
#include"CLogin.h" //显示登录窗口
#include"CIndexWin.h" //管理员主界面窗口
#include"CManagerWin.h" //经理主界面窗口
#include"CWaiterWin.h" //服务员主界面窗口
#include<stdlib.h>
#include"CList.h"
int main()
{
CLoginWin *login = new CLoginWin(12,5,30,20);
CIndexWin *index = new CIndexWin(3,3,25,23);
CManagerWin *manager = new CManagerWin(3,3,25,23);
CWaiterWin *waiter = new CWaiterWin(3,3,25,30);
CList *myList = new CList;
myList->addList(login);
myList->addList(index);
myList->addList(manager);
myList->addList(waiter);
cout<<myList->getListCount()<<endl;//4
return 0;
}
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