5

我如何将 B 的构造函数声明为 A 的朋友?我试过:

class A
{
  private:
   A();
  public:
   friend B::B();
};

class B
{
  public:
    B();
};
4

1 回答 1

7

替换B::class;

class A
{
private:
    A();
public:
   friend class B;
};

class B
{
public:
    B();
};
于 2010-12-04T20:30:03.693 回答