Question

DESCRIPTION

Create a C++ program to manage phone contacts.
The program will allow the user to add new phone contacts, display a list of all contacts, search for a specific contact by name, delete a specific contact.
The program should provide the user with a console or command line choice menu about possible actions that they can perform.
The choices should be the following:
1. Display list of all contacts.
2. Add a new contact.
3. Search for a contact given the contact’s first or last name.
4. Delete a contact.
5. Edit contact
6. Exit program.
To represent a contact in your program, create the following fields:
• firstName - string
• lastName - string
• phoneNumber - long
• phoneType – enum PhoneType
The PhoneType can be only one of the following: “CELL”, “HOME”, “WORK”. When the program first loads, it reads all the saved contacts (if any) from a file named database.txt into an Array. While the program is running, the user can choose any of the 5 available options. When the user selects the option 5 (exit program), the program stores the current contents of the Array to the file (replacing the old contents) and exits.
During the program execution, if the user chooses to add or delete items, only the Array will be updated. The database.txt file will be updated automatically only when the program is about to exit. In other words, when the user selects option 5, the program first saves all the contents of the Array into the text file, and then exits.
The format of the contents of the database.txt file should be in human readable plain text, one record per line (note the ~ separator between different entries) For example: Shawn~Seals~5124567890~0
Ted~Sheckler~2104567890~2
Chip~Chipperson~9404567890~1
For display, contacts should be printed to the console in the following format.
Chip Chipperson, Home (940)456-7890
Shawn Seals, Cell (512)456-7890
Ted Sheckler, Work (210)456-7890

Your array will not be a fixed size. You will dynamically declare an array that is the exact size you need. If you add a contact, you will need to increase the array size. If you delete a contact, you will need to decrease the array size.
Do not declare any value type Contact variables in your code. Instead, declare reference (pointer) type Contact variables and dynamically allocate memory for the actual Contact. For example…
Contact contact; // DO NOT DO THIS ANYWHERE! This is a value type variable.
Contact *contact = new Contact; // Do this instead. This is a reference type variable.

You will no longer use a struct to represent a Contact. You will use a class to represent a Contact.
Your Contact class will have its own .h (header) file and .cpp (implementation) file. The Contact class will not be declared or implemented in main.cpp.
Professor will provide the contents of the Contact.h file. You may add to it if necessary. You will write the contents of the Contact.cpp file.
The member variables (firstName, lastName, phoneNumber, phoneType) of the Contact class must be private. The phoneNumber instance variable needs to be changed from a type long to a type string. You will provide getters and setters to access these variables.
Your setter for phoneNumber will only allow valid data to be set to the Contact instance variable. If invalid data is passed into this setter, it will return false.
You will add “UNKNOWN” to the PhoneType enum. This new value will be placed at the end of the enum.
You will write a Contact constructor which takes firstName and lastName as arguments to be used in the creation of a new Contact. This constructor will set the phone number to the string “Unknown” and the phoneType to UNKNOWN. You will NOT provide a default constructor.
You will add an “Edit Contact” feature to the main menu of the application. This feature will be option 5. “Exit” will be changed to option
The “Edit Contact” feature will prompt the user to enter the last name of the contact they would like to edit and then present the user with a numbered list of all matching contacts. The user will then select a contact from the list to edit. The user will then be able to edit any of the contact’s fields.

//Contact.h provided by professor

#ifndef ASSIGNMENT4_H_CONTACT_H
#define ASSIGNMENT4_H_CONTACT_H

#include <string>
using namespace std;

enum PhoneType {
    CELL,
    HOME,
    WORK,
    UNKOWN
};

class Contact {

private:
    string firstName;
    string lastName;
    string phoneNumber;
    PhoneType phoneType;

public:
    Contact(string firstName, string lastName);
    void setFirstName(string firstName);
    string getFirstName();
    void setLastName(string lastName);
    string getLastName();
    bool setPhoneNumber(string phoneNumber);
    string getPhoneNumber();
    void setPhoneType(PhoneType phoneType);
    PhoneType getPhoneType();
};


#endif //ASSIGNMENT4_H_CONTACT_H

Answer 1

//Contact Manager

#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include <iomanip.h>
#include <conio.h>

enum class PhoneType {
    CELL,
    HOME,
    WORK,
    UNKOWN
};

class Contact{

    private:
    string firstName;
    string lastName;
    long int phoneNumber;
    PhoneType phoneType;

    public:
    void getdata();
    void showdata();
    char *getname(){ return firstName; }
    char *getphno(){ return phoneNumber; }
    void update(char *nm,char *telno){
        strcpy(firstName,nm);
        strcpy(phoneNumber,telno);
    }
};

void Contact :: getdata(){
    cout<<"\nEnter Name : ";
    cin>>firstName;
    cin>>lastName;
    cout<<"Enter Phone No. : ";
    cin>>phoneNumber;
    cout<<"Enter Phone Type";
    cin>>phoneType;
    PhoneType PT = PhoneType::phoneType;
}

void Contact :: showdata(){
    cout<<"\n";
    cout<<setw(20)<<firstName;
    cout<<setw(15)<<phoneNumber;
    cout<<setw(15)<<PT;
}

void main(){
    Contact rec;
    fstream file;

file.open("c:\\Contact.h", ios::ate | ios::in | ios::out | ios::binary);
    char ch,nm[20],telno[6];
    int choice,found=0;
    while(1){
        clrscr();
        cout<<"\n*****Contact Manager*****\n";
        cout<<"1) Add New Contact\n";
        cout<<"2) Display All Contacts\n";
        cout<<"3) Search Contact Number\n";
        cout<<"4) Search Person Name\n";
        cout<<"5) Edit Telephone No.\n";
        cout<<"6) Exit\n";
        cout<<"Choose your choice : ";
        cin>>choice;
        switch(choice){
            case 1 : //New Record
                 rec.getdata();
                 cin.get(ch);
                 file.write((char *) &rec, sizeof(rec));
                 break;

            case 2 : //Display All Records
                 file.seekg(0,ios::beg);
                 cout<<"\n\nRecords in Phone Book\n";
                 while(file){
                    file.read((char *) &rec, sizeof(rec));
                    if(!file.eof())
                        rec.showdata();
                 }
                 file.clear();
                 getch();
                 break;

            case 3 : //Search Tel. no. when person name is known.
                 cout<<"\n\nEnter Name : ";
                 cin>>nm;
                 file.seekg(0,ios::beg);
                 found=0;
                 while(file.read((char *) &rec, sizeof(rec)))
                 {

if(strcmp(nm,rec.getname())==0)
                    {
                        found=1;
                        rec.showdata();
                    }
                 }
                 file.clear();
                 if(found==0)
                    cout<<"\n\n---Record Not found---\n";
                 getch();
                 break;

            case 4 : //Search name on basis of tel. no
                 cout<<"\n\nEnter Telephone No : ";
                 cin>>telno;
                 file.seekg(0,ios::beg);
                 found=0;
                 while(file.read((char *) &rec, sizeof(rec)))
                 {
                    if(strcmp(telno,rec.getphno())==0)
                    {
                        found=1;
                        rec.showdata();
                    }
                 }
                 file.clear();
                 if(found==0)
                    cout<<"\n\n---Record Not found---\n";
                 getch();
                 break;

case 5 : //Update Telephone No.
                 cout<<"\n\nEnter Name : ";
                 cin>>nm;
                 file.seekg(0,ios::beg);
                 found=0;
                 int cnt=0;
                 while(file.read((char *) &rec, sizeof(rec)))
                 {
                    cnt++;
                    if(strcmp(nm,rec.getname())==0)
                    {
                        found=1;
                        break;
                    }
                 }
                 file.clear();
                 if(found==0)
                    cout<<"\n\n---Record Not found---\n";
                 else
                 {
                    int location = (cnt-1) * sizeof(rec);
                    cin.get(ch);
                    if(file.eof())
                        file.clear();

                    cout<<"Enter New Telephone No : ";
                    cin>>telno;
                    file.seekp(location);
                    rec.update(nm,telno);
                    file.write((char *) &rec, sizeof(rec));
                    file.flush();
                 }
                 break;
            case 6 : gotoout;
        }
    }
out:
file.close();
}