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c++模板类作为友元类出现的问题


 #include <iostream>

using namespace std;

template <class T>
class SimNode
{
    friend SimSpace<T>;
private:
    T data;
    int link;
};

template <class T>
class SimSpace
{
private:
    SimNode<T>* space;
};

int main()
{
    system("pause");
    return 0;
}

报错之后问题出现在


 friend SimSpace<T>;

请问为什么？

C++ 模板

9 years, 3 months ago

怪叔叔SAMA

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怪叔叔SAMA 9 years, 3 months ago

Answer 1

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你的声明有问题，应该是


 class SimNode
{

private:
    template <class T>      //声明不要漏了template <class T>，这是C++很蛋疼的一个地方
    friend class SimSpace;  
    T data;
    int link;
};

answered 9 years, 3 months ago

悠久D成敗

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悠久D成敗 answered 9 years, 3 months ago

c++模板类作为友元类出现的问题

怪叔叔SAMA

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悠久D成敗

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