#include "stdafx.h"
#include <iostream>
#include <fstream>

using namespace std;

const char fileName[50] = "c:\\Users\\use r\\Desktop\\lab 4prac\\data.txt ";

void openfile(ofstre am& outstream);
void closefile(ofstr eam& outstarem);

void writeInformatio n(ofstream& outstream, char firstName[], char lastName[], int phoneNumber);...