类成员函数指针的使用

#include <iostream>

class A
{
public:
A(){};
virtual ~A(){};
};

class B : public A
{
public:
B(){};
~B(){};

int Fb(int a){ return a*a;}
};

typedef int (A::*Myfunction)(int);

int main()
{
B* pB = new B;
Myfunction pf = (Myfunction)(&B::Fb);
int retValue = (pB->*pf)(3);
std::cout<<retValue;
std::cin>>retValue;

return 1;
}