main.cpp

来自「this a good book.」· C++ 代码 · 共 49 行

#include<iostream.h>

class MyClass
{
private:
	int m_Number;
	int Add(int i)
	{
		return m_Number +=i;
	}
	int Sub(int i)
	{
		return m_Number -=i;
	}
	int Mul(int i)
	{
		return m_Number*=i;
	}
	/****found*****/
	typedef int (FUN)(int);
	
/****found*****/
	FUN fun[];
public:
	MyClass()
	{
		fun[0] = MyClass::Add;
		fun[1] = MyClass::Sub;
		fun[2] = MyClass::Mul;
		m_Number = 0;
	}
	int CallFun(int i,int j)
	{
		/****found*****/
		return (fun[i])(j);
	}
};


void main()
{
	MyClass obj;
	cout<<obj.CallFun(0,5)<<endl;
	cout<<obj.CallFun(1,2)<<endl;
	cout<<obj.CallFun(2,3)<<endl;

	return;
}