實作客戶機（CLIENT）類。
定義字元型靜态資料成員SeverName，儲存其伺服器名稱；
整型靜态資料成員ClientNum，記錄已定義的客戶數量；
定義靜态函數ChangeSeverName()改變伺服器名稱。
在頭檔案client.h中定義類，
在檔案client.cpp中實作，
在檔案test.cpp中測試這個類，
觀察相應的成員變量取值的變化情況。 複制
- 代碼如下:
- client.h
/*
*This file contains code for C++ 3rd experiment
*By LZH
*/
/*
*Warnning:A static variable in a class belongs to a class and does not belong to an Object!
*You cannot initialize a variable when an object is defined!
*Cannot initialize with constructors!
*Also, use the class name instead of the object.
*/
#ifndef CLIENT_H
// we're here only if CLIENT_H has not yet been defined
#define CLIENT_H
// Definition of Sales_item class and related functions goes here
#include <iostream>
#include <string>
using namespace std;
class CLIENT {
private:
static string ServerName; //Keep the Name of the Sever
static int ClientNum; //Keep the sum of the client
public:
CLIENT();
~CLIENT();
static void ChangeSeverName();
void show();
};
#endif 複制
- client.cpp
#include"client.h"
CLIENT::CLIENT() {
cout<<"This is the Dafault Constructor!!";
ClientNum++;
}
void CLIENT:: ChangeSeverName(){
cout << "Please enter the name of new server:";
cin >> ServerName;
} //Change the Name of the server
void CLIENT::show(){
cout << "The Server's name:" << ServerName << endl;
cout << "The number of the Clients:" << ClientNum << endl;
}
CLIENT::~CLIENT() {
}
int CLIENT::ClientNum = 0;
string CLIENT::ServerName = "#@$#@$"; 複制
- test.cpp
#include"client.h"
int main() {
CLIENT asp;
asp.show();
asp.ChangeSeverName();
asp.show();
return 0;
} 複制
- 測試截圖
