#include<iostream>
#include<fstream>
using namespace std;

class Telephone
{
public:
	char name[20];
	char phone[13];
	char mobile[12];
	Telephone* Next;
	void Input();
	void InputFromFile(istream& in);
	void show();


};


class TelephoneBook
{
public:
	TelephoneBook();
	~TelephoneBook();
	void ShowMenu();
	void start();
	void Find();
    void Find1();
    void Find2();
	void Save();
	void ModifyItem();
	void RemoveItem();
	void Display();
    void Display1();
    void Display2();
	void AddItem();

	void display();
	

private:
	Telephone *Head,*End;
    
	ifstream in;
	ofstream out;
	Telephone* FindItem(char *name)
	{
	for(Telephone* p=Head;p->Next!=End;p=p->Next)
		if(!strcmp(p->Next->name,name))
			return p;
		return NULL;
	}
Telephone* FindItem1(char *phone)
	{
	for(Telephone* p=Head;p->Next!=End;p=p->Next)
		if(!strcmp(p->Next->phone,phone))
			return p;
		return NULL;
	}
Telephone* FindItem2(char *mobile)
	{
	for(Telephone* p=Head;p->Next!=End;p=p->Next)
		if(!strcmp(p->Next->mobile,mobile))
			return p;
		return NULL;
	}
};