// List ADT implementation

#include <iostream>

using namespace std;

const int MAX = 100;

class List
{	int length;
	int data[MAX];	// assuming: integer list
public:
	List()	// empty: length=0
	{	length = 0;   }
	int Length() const
	{	return length;      }
	bool IsEmpty() const
	{	return length == 0;   }
	bool IsFull() const
	{	return length == MAX; }
	void Insert(int item) 
	{	data[length] = item; length++;	}
	bool IsPresent(int item) const;	// prototype
	void Print() const
	{	for(int i=0; i<length; i++)
			cout << data[i] << " ";
		cout << endl;
	}
};

bool List :: IsPresent(int item) const 
{	bool done = false;
	for(int i=0; i<length&&!done; i++)
		if(item == data[i])
			done = true;
	return done;
}

int main()
{	int item;
	// Q: declare a List obj. list1?
	List list1;
	// Q: prompt, input, and insert items to list1?
	cout << "Input an integer? ";
	cin >> item;
	while(cin)
	{	list1.Insert(item);
		cout << "Input an integer? ";
        	cin >> item;
	}
	
	// check the length?
	 cout << "\n\n*************\nLength: " << list1.Length() << endl; // 4
	// Q: out the list to the screen?
	cout << "The list is: ";
	list1.Print();

	// Q: check if 77 is in the list? output the cor. message.
	if( list1.IsPresent(77) )
		cout << "\n77 is in the list.\n";
	else
		cout << "\n77 is not in the list.\n";

	//debug
	cout << "\n\nBye.\n\n";
	return 0;
}