C++ 函数指针 函数名作为参数

1.函数指针声明

typedef 返回类型（*函数指针类型名）（函参列表）;

例子：

typedef int (*pf)(const int& a,const int& b);

2.函数指针例子

// MethodPoint.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <iostream>using namespace std;typedef int (*pf)(const int& a,const int& b);int sum(const int& a,const int& b){return a + b;}int minus(const int& a,const int& b){return a - b;}int doSometing(const int& a,const int& b, pf p){return p(a, b);}int _tmain(int argc, _TCHAR* argv[]){cout << doSometing(1, 2, &sum) << endl;cout << doSometing(1, 2, &minus) << endl;system("pause");return 0;}

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