C++成员函数指针

参考《Effective C++》P173；

   

class A{ public: void f(){ cout << "f()" << endl; }     void f(int i){ cout << "f(int)" << endl; } };     int main() { void (A::*pf)() = &A::f; A a; (a.*pf)(); return 0; }

class A{ public: void f(){ cout << "f()" << endl; }     void f(int i){ cout << "f(int)" << endl; } };     int main() { void (A::*pf)(int i) = &A::f; A a; (a.*pf)(3);         return 0; }

   

#include<iostream>

   

using namespace std;

   

class Test{

public:

void f(){

cout << "hello, world" << endl;

}

static void sf(){

cout << "hello, world" << endl;

}

};

   

int main(){

void (Test::*pf)() = &Test::f;

(Test().*pf)();

   

void (*spf)() = &Test::sf; // Test::sf also works

spf();

return 0;

}

   

注意，取非静态方法的函数地址必须使用&，否则