在C ++中为参数创建Set/Get函数 [英] Create Set/Get function to parameter in C++

问题描述

大家好.

如何为变量创建get/set函数，如下所示:

Hi all.

how to create get/set function to variables as below:

class A{
Private:
     char * m_sPathFile;
     char *m_fileName;
};

感谢

thanks

推荐答案

请注意，C++关键字为private，全部为小写.
一般来说，您可以通过以下方式提供此类访问器:

Please note, the C++ keyword is private, all lowercase.
General speaking you provide the such accessors this way:

class A
{
  // members are 'automatically' private by default
  int a; 

  // you explicitely declare the public section
public:
  // ..
  int get(){return a;}
  void set(int n){a=n;}
};

我故意选择了int数据成员 ，因为直接处理char指针有点棘手(例如，您是否需要字符串的副本或什么?)，并且可能会更好.使用std::string代替.

I chose a int data member on purpose, because direct handling of char pointers is a bit tricky (for instance do you need a copy of the string or what?) and probably you''ll better use std::string instead.

如果您使用的是Visual Studio，另一种方法是使用
__declspec及其属性属性.这将使您的设置者和获取者自动

属性(C ++)

If you are using Visual Studio the other way to do it is by using
__declspec and his property attribute. This will make you the setters and getters automatically

property (C++)

class A{
Private:
     string m_strPathFile;
     string m_strFileName;
Public:
void SetPathFile(string strPathFile);
string GetPathFile();

};

void A::SetPathFile(string strPathFile)
{
  m_sPathFile = strPathFile;
}

string A::GetPathFile()
{  
  return m_strPathFile;
}

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