c – 此指针和成员函数地址

我正在尝试获取成员函数的地址,但我不知道如何.如果有人能告诉我我做错了什么,我将不胜感激.正如您在下面的示例中所看到的,既没有(长)& g也没有(长)& this-> g工作,我无法弄清楚正确的语法：

/* Create a class that (redundantly) performs data member selection
 and a member function call using the this keyword (which refers to the
 address of the current object). */

#include<iostream>
using namespace std;

#define PR(STR) cout << #STR ": " << STR << endl;

class test
{
public:
    int a, b;
    int c[10];
    void g();
};

void f()
{
    cout << "calling f()" << endl;
}

void test::g()
{
    this->a = 5;
    PR( (long)&a );
    PR( (long)&b );
    PR( (long)&this->b );       // this-> is redundant
    PR( (long)&this->c );       // = c[0]
    PR( (long)&this->c[1] );
    PR( (long)&f );
//  PR( (long)&g );     // this doesn't work
//  PR( (long)&this->g );       // neither does this

    cout << endl;
}

int main()
{
    test t;
    t.g();
}

提前致谢！

谢谢您的回复！但是我仍然没有让它发挥作用.如果我换行

PR( (long)&g );

至

PR( (long)&test::g );

,它仍然无法正常工作.

PR( &test::g );

在main()中工作,但不是

PR( (long)&test::g );

???

我想我错过了什么.

标签：c,function,memory-address,member
来源： https://codeday.me/bug/20191003/1846703.html