谈函数指针(全局/类成员函数)和函数对象
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时间：2007-07-21
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函数指针(全局函数/类成员函数)、函数对象(Function object)
一. 函数指针类型为全局函数.
| 以下是引用片段： http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/#include "stdafx.h" http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/http://dev.yesky.com/193/#include using namespace std; class TestAction; typedef void (*fp)(int); void Drink(int i) { cout<<"No. "< } void Eat(int i) { cout<<"No. "< } class TestAction { public: fp testAct; void TestAct(int i) { if (testAct != NULL) { testAct(i); } } }; int main(int argc, char* argv[]) { TestAction doact; doact.testAct = &Drink; doact.TestAct(0); doact.TestAct(1); doact.TestAct(2); doact.testAct = &Eat; doact.TestAct(0); doact.TestAct(1); doact.TestAct(2); return 0; } |
函数指针(全局函数/类成员函数)、函数对象(Function object)
一. 函数指针类型为全局函数.