c++语言程序设计（第四版）学生用书实验5_2

C++静态成员变量示例

最新推荐文章于 2025-07-14 17:44:08 发布

原创最新推荐文章于 2025-07-14 17:44:08 发布 · 2.9k 阅读

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CC 4.0 BY-SA版权

本文通过一个C++客户端类实例，展示了如何使用静态成员变量来跟踪客户端数量，并提供了更改服务器名称的方法。该示例代码包括类定义、静态成员变量的初始化以及主函数中的演示。

// client.h
class client{
public:
client(){ClientNum++;}
~client(){ClientNum--;}
static void ChangeServerName(char x);
static void ShowClientNum();
private:
static char ServerName;
static int ClientNum;

};

// client.cpp
# include "client.h"
# include <iostream>
using namespace std;

int client::ClientNum = 0;
char client::ServerName = 'M';

void client::ChangeServerName(char name){
ServerName = name;
cout<<"ServerName is "<<ServerName<<endl;
}

void client::ShowClientNum(){
cout<<"ClientNum = "<<client::ClientNum<<endl;

}

// test.cpp
# include "client.h"
# include <iostream>
using namespace std;
int main(){
client a;
client::ChangeServerName('a');
client::ShowClientNum();
client b;
client::ChangeServerName('b');
client::ShowClientNum();
return 0;
}