Question

Written in C++ language

Write a program that keeps track of a telephone directory. The program should create a
structure, Person, with the following data:

struct Person
{
string firstName;
string lastName;
string phoneNumber;
};
The program should then create a vector of Person structs, called directory. Your program
should have functions to:
- Read the vector data from a data file “telephoneData.txt” into the vector directory.
- Print the details of all Persons in the vector.

You may use the following “telephoneData.txt” file:

Tom Garcia 855-433-2076
Nancy James 202-872-1010
Bill Meyer 120-343-5623
Jack Didier 352-654-1983

Your program should print something like this:
Name Telephone
-----------------------------
Tom Garcia 855-433-2076
Nancy James 202-872-1010
Bill Meyer 120-343-5623
Jack Didier 352-654-1983

Please comment and show output.

Code must have functions also read prompt and print

Answer 1

IF YOU HAVE ANY DOUBTS COMMENT BELOW I WILL BE THERE TO HELP YOU

ANSWER:

CODE:

#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

struct Person
{
string firstName;
string lastName;
string phoneNumber;
};

int main() {
vector<struct Person> directory;
  
/*
Creating file:"telephonedata.txt"
If you already have file in your current directory then remove write operation of FILE
*/
/*File Writing Begin*/
ofstream outputFile;
outputFile.open("telephoneData.txt");
if (!outputFile) {
cerr << "Unable to create file in the Directory";
exit(1);
}
outputFile<<"Tom"<<" "<<"Garcia"<<" "<< "855-433-2076"<<endl;
outputFile<<"Nancy"<<" "<<"James"<<" "<<"202-872-1010"<<endl;
outputFile<<"Bill"<<" "<<"Meyer"<<" "<<"120-343-5623"<<endl;
outputFile<<"Jack"<<" "<<"Didier"<<" "<<"352-654-1983"<<endl;
outputFile.close();
/*FIle writing end*/
  
/*FIle reading begin*/
ifstream inputFile;
inputFile.open("telephoneData.txt");

if (!inputFile) {
cerr << "File Not found in the Directory";
exit(1);
}
while(inputFile)
{
struct Person temp; /*Temporary struct person object to store data from file*/
inputFile >> temp.firstName>>temp.lastName>>temp.phoneNumber;

directory.push_back(temp); /*String struct Person in Vector Directory*/
}
inputFile.close();
/*File reading end*/

/*Console output from vector begin*/
cout<<"Name "<<" Telephone"<<endl;
cout<<"--------------------------"<<endl;
/*Using Iterator to access data from vector*/
for(std::vector<struct Person>::iterator it = directory.begin() ; it != directory.end(); ++it)
{
struct Person temp=*it; /*Receving struct Person through Iterator from Vector directory*/
cout<<temp.firstName<<" "<<temp.lastName<<" "<<temp.phoneNumber<<endl; /*Console Output*/
}
/*Console Input from Vector end*/
return 0;
}

HOPE IT HELPS YOU

RATE THUMBSUP PLEASE