c – 解析“只能在类中初始化静态const积分数据成员”编译错误

#include "stdafx.h" 
#include <iostream> 

using namespace System; 
using namespace std;    
#pragma hdrstop 

class Tester;


void input();

class Tester
{
    static int number = 5;

public:

    Tester(){};
    ~Tester(){};

    void setNumber(int newNumber)
    {
        number = newNumber;
    }

    int getNumber()
    {
        return number;
    }
}

Tester testerObject;

void main(void)
{
    cout << "Welcome!" << endl;

        while(1)
        {
            input();
        }
}

void input()
{
    int newNumber = 0;

    cout << "The current number is " << testerObject.getNumber();
    cout << "Change number to: ";

        cin >> newNumber;

    cout << endl;

    testerObject.setNumber(newNumber);

    cout << "The number has been changed to " << testerObject.getNumber() << endl;
}

以下是编译错误：

1>------ Build started: Project: test,Configuration: Debug Win32 ------
1>Compiling...
1>test.cpp
1>.test.cpp(15) : error C2864: 'Tester::number' : only static const integral data members can be initialized within a class
1>.test.cpp(33) : error C2146: syntax error : missing ';' before identifier 'testerObject'
1>.test.cpp(33) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>.test.cpp(49) : error C2039: 'getNumber' : is not a member of 'System::Int32'
1>        c:windowsmicrosoft.netframeworkv2.0.50727mscorlib.dll : see declaration of 'System::Int32'
1>.test.cpp(55) : error C2039: 'setNumber' : is not a member of 'System::Int32'
1>        c:windowsmicrosoft.netframeworkv2.0.50727mscorlib.dll : see declaration of 'System::Int32'
1>.test.cpp(57) : error C2039: 'getNumber' : is not a member of 'System::Int32'
1>        c:windowsmicrosoft.netframeworkv2.0.50727mscorlib.dll : see declaration of 'System::Int32'
1>Build log was saved at "file://c:UsersOwnerDocumentsVisual Studio 2008ProjectstesttestDebugBuildLog.htm"
1>test - 6 error(s),0 warning(s)
========== Build: 0 succeeded,1 failed,0 up-to-date,0 skipped ==========

>如何创建全局类
像我试过的那样对象正确
这里.
>我如何解决“只有静态问题”
const积分数据成员即可
在一个类中初始化“
>基本上我该如何解决剩下的问题
的错误,所以我可以得到这个
编译？

我喜欢在文件范围内声明全局类对象(我喜欢在文件范围内声明所有全局变量),因为当我必须创建单独的源文件并执行“extern”时,它变得非常复杂并且永远不适合我.虽然,我确实想知道如何最终做到这一点……似乎我看到的每个教程都不会编译,除非它编译,我不知道如何重新创建它！

如果我可以让它编译…然后我可以成功地学习如何做到这一点.因此,如果有人可以将上述内容重写为字面上复制的内容.粘贴到Visual C Express 2008并开始工作,我终于能够弄清楚如何重新创建它.看到修复此问题,我感到非常兴奋！只是我无法使Global Objects正常工作！有关声明Global Class Objects的任何其他信息……或者其他任何相关信息都是受欢迎的！