使用“近”时编译器错误。作为变量名 [英] Compiler error when using "near" as a variable name

问题描述

我在我的代码中有一个非常奇怪的错误。我在C ++中创建了这个类：

I get a very weird error in my code. I created this class in C++:

class Tester{
    float f;
    Tester(float,float);
};

我实现了这样：

Tester::Tester(float near,float a){
    this->f=near/a;
}

我收到以下错误：

..\src\Tester.cpp: In constructor 'Tester::Tester(float, float)':
..\src\Tester.cpp:4:14: error: expected primary-expression before '/' token
  this->f=near/a;
              ^

>到其他错误消失。这不是一个大问题，当然，因为我可以重命名变量，但我只是好奇，如果有人知道原因。

when i rename near to something else the error disappears. thats not a big deal of course because i can rename the variable, but i was just curious if someone of you knows the reason.

更新：

原因是 windef.h 的不合作。它包含在 windows.h 通过 wglext.h 。

The reason is the inlusion of windef.h. it was included by windows.h via wglext.h.

推荐答案

看起来near在一些标题中被编译器定义为一个宏。通常这个宏与near指针一起使用。

It seems that near is defined as a macro by the compiler in some header. Usually this macro is used with "near" pointers.

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