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最新推荐文章于 2024-08-23 22:14:27 发布

xiaodan007

最新推荐文章于 2024-08-23 22:14:27 发布

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分类专栏：软件工程文章标签： command fun include system class null

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#include <iostream>

using namespace std;


class Command
{
public:
	virtual ~Command(){}
	virtual void Execute(){}
protected:
	Command(){}
};

template<class Owner>
class SimpleCommand: public Command
{
public:
	typedef int (Owner::* Func)();
	SimpleCommand(Owner* _owner, Func  _fun):m_cmdOwner(_owner), m_cmdFunc(_fun){}
	virtual void Execute()
	{
		cout<<(m_cmdOwner->*m_cmdFunc)()<<endl;
	}
private:
	Func m_cmdFunc;
	Owner* m_cmdOwner;
};


class add
{
public:
	add(int _a, int _b):m_a(_a),m_b(_b){NULL;}
	int operator()(){ return m_a + m_b; }
private:
	int m_a, m_b;
};

void main()
{
	add sum(1,3);
	SimpleCommand<add> aCommand(&sum,&add::operator());
	aCommand.Execute();

	system("pause");
}