多重继承：相同的变量名称 [英] Multiple Inheritance: same variable name

问题描述

  class A 
 {
 protected：
 string word; 
}; 
 
 class B 
 {
 protected：
 string word; 
}; 
 
类派生：public A，public B 
 {
 
}; 
  

变量的可访问性如何受影响在派生？

解决方案

这将是不明确的，你会得到一个编译错误。 >

您需要使用合适的范围才能使用它：

 派生：public A，public B 
 {
 Derived（）
 {
 A :: word =A！ 
 B :: word =B !!; 
} 
}; 
  

class A
{
   protected:
    string word;
};

class B
{
   protected:
    string word;
};

class Derived: public A, public B
{

};

How would the accessibility of the variable word be affected in Derived? How would I resolve it?

解决方案

It will be ambiguous, and you'll get a compilation error saying that.

You'll need to use the right scope to use it:

 class Derived: public A, public B
{
    Derived()
    {
        A::word = "A!";
        B::word = "B!!";
    }
};

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