我的错误在哪里? [英] where is my mistake ?

问题描述

<pre>#include <iostream>
using namespace std;

typedef void (*PFN)();

class A
{
public:
    void foo()
    {
        run(func);
    }

private:
    void run(PFN pfn1)
    {
        pfn1();
    }

    void func()
    {
        printf("run ");
    }
};

int main()
{
    A a;
    a.foo();

    system("pause");
    return 0;
}

在调试以下错误时显示:
错误C3867:``A :: func'':函数调用缺少参数列表;使用``& A :: func''创建指向成员的指针

while debuging following error shows:
error C3867: ''A::func'': function call missing argument list; use ''&A::func'' to create a pointer to member

推荐答案

已读取 ^ ].

看看你是否无法自救. :)

Have a read of this[^].

See if you can''t help yourself. :)

制作

void func()
{
    printf("run ");
}

进入关注静态成员函数

into the follow static member function

// static member Pointer
static void func()
{
    printf("run ");
}

而且您的语法应该正确

或对于成员函数指针，请尝试此

And your syntax should be correct

or for a member function pointer try this

#include <iostream>
// Example Member function pointer
using namespace std;
class A;
typedef void (A::*PFN)();
class A
{
public:
    void foo()
    {
        run(&A::func);
    }
private:
    void run(PFN pfn1)
    {
        ((*this).*pfn1)();
    }
    void func()
    {
        printf("run ");
    }
};

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