c09-

来自「C++面向对象课程设计课件」· 代码 · 共 44 行

	class A 
	{
	//...
	};

	class B
	{
	public:
		A& operator[] (int n) const 
		{ return b[n];}
		//...
	private:
		A b[100];
	};

	class BIter
	{
	public:
		BIter(B & cnt):container(cnt),index(0){}
		A& operator++ () 
			{	
			//判断index范围
			return container[++index];
			}
		bool Empty() const 
			{return index>=100;}		
	private:
		B &	container;
		int	index;
	};	

	int main()
	{
		B OneContainer;
		Iter it(OneContainer);
		while(!it.Empty()) 
		{
			//do something
			++it;
		}
	}

		
	}