使用具有相同声明的类方法调用全局函数 [英] calling a global function with a class method with the same declaration

问题描述

我想在C ++类中包装一个C库。对于我的C ++类，我也希望使用这些C函数使用的相同声明：是否可以这样做？

I would like to wrap a C library within a C++ class. For my C++ class I also would like to have the same declaration used by these C function: is it possible to do that?

如果例如我有下面的情况有可能将C函数与C ++函数区分开来吗？

If for example I have the case below how would it be possible to distinguish the C-function from the C++ one? I would like to call the C one off course.

 extern int my_foo( int val ); //

 class MyClass{
    public:
    int my_foo( int val ){
           // what to write here to use
           // the C functions?
           // If I call my_foo(val) it will call
           // the class function not the global one
    }
 }

推荐答案

使用范围解析运算符 :: ：

Use the scope resolution operator :::

int my_foo( int val ){
    // Call the global function 'my_foo'
    return ::my_foo(val);
}

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