变量未在此范围中声明 [英] variable not declared in this scope

问题描述

我正在为类做一个程序，并且由于某种原因，它在类定义中声明时给我这个错误。

I'm making a program for class, and for some reason it is giving me this error when it is declared in the class definition.

错误：在函数'void setMessageBuffer（std :: string）'

错误：'message' code>未在此范围内声明。

error: in function 'void setMessageBuffer(std::string)'
error: 'message' was not declared in this scope.

class apple
{
     private:
         string message, message2;

     public:
         void setMessageBuffer(string);
};

void apple::setMessageBuffer(string messagebuff)
{
     message = messagebuff;
}

我做了其他部分的程序，但由于某种原因，这部分似乎不想编译。

I've done other parts of the program like that and they work fine, but for some reason this part doesn't seem to want to compile.

推荐答案

您忘了把 apple :: 前面的方法名。您的错误讯息告诉我这个！

You forgot to put apple:: in front of the method name. Your error message tells me this!

error: in function 'void setMessageBuffer(std::string)'
error: 'message' was not declared in this scope.

与对比：

template.cpp: In member function ‘void apple::setMessageBuffer(std::string)’:
template.cpp:14:7: error: ‘another variable’ was not declared in this scope

（抱歉如果我错了，也许这只是我的编译器的行为，g ++ -4.6）

(Apologies if I'm wrong here, maybe it's just how my compiler is behaving, g++-4.6)

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