函数对象源代码

// funcall.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <iostream> using namespace std; class CFun { public: CFun(int nVal = 100) { m_nData = nVal; } ~CFun() { } public: int operator() (int nSub) { return (m_nData - nSub); } private: int m_nData; }; void CallFun(int n, CFun& objFun); int _tmain(int argc, _TCHAR* argv[]) { CFun objFun(200); CallFun(10, objFun); return 0; } void CallFun(int n, CFun& objFun) { int nVal = objFun(n); cout << "nVal = " << nVal << endl; }