Question

Please help!!

(C++ PROGRAM)

You will design an online contact list to keep track of names and phone numbers.

·        

a. Define a class contactList that can store a name and up to 3 phone numbers (use an array for the phone numbers). Use constructors to automatically initialize the member variables.

b.Add the following operations to your program:

i. Add a new contact. Ask the user to enter the name and up to 3 phone numbers.

ii. Delete a contact by having the user enter the name.

iii. Search the list by name and print the name and phone numbers for that one person.

iv. Print all contacts and phone numbers for each contact.

c. Create a program to test your class. The program should have a menu like this one.

1. Add a contact

2. Delete a contact

3. Print all contacts

4. Search for a contact

5. Exit

·         Here is how your node will look: (This is going to be a struct) The struct will contain a string, an array of 3 elements and the pointer to the next node.

Name Phone Numbers 2145556678 | 81799922222143555555 Pointer to Next Node

Test: Take screenshots when you test your program. Test cases I want to see: Enter two contacts, print all contacts, search for a contact, delete a contact, print all contacts again so you can see the deleted contact is gone, search for the deleted contact.

Source Code: contactList.cpp, contactList.h and the testDriver.cpp

Answer 1

Below is the code for your question . I have attached some test cases as advised you can run the code and make your own test case. If you like the work please give a uplike .

The code is :

#include <iostream>
#include <conio.h>
#include <string>
using namespace std;


//prototypes
void printline(char, int);
bool name_valid(string);
bool mob_valid(string);

class contact
{
    string name;
    string mob;
       
    public:
    //Initialize the contact by a default value
        contact(): name(""), mob("")
        {}
       
        // Shows all contacts
        bool show()
        {
            if(name != "")
            {
                cout << name << "\t" << mob << endl;
                return 1; //Indicates success
            }
            else
                return 0; //Indicates failure
        }
       
        //Search
        bool show(string search_term)
        {
            if(search_term == name)
            {
                cout << name << "\t" << mob << endl;
                return 1;
            }
            else
                return 0;
        }
       
        //Checks whether the name exists or not
        bool name_exists(string tname)
        {
            if(tname == name)
                return 1;
            else
                return 0;
        }
       
        //The contact object is initialized by valid values
        bool add(string new_name, string new_mob)
        {
            if(name=="")
            {
                name = new_name;
                mob = new_mob;
                return 1; // Success
            }
            else
                return 0; // Failure
   
        }
       
        //Edits the contact details
        bool edit(string);
       
        //Sets the contact details to default values
        //That is, the contact details are thus erased
        bool erase(string new_name)
        {
            if(new_name==name)
            {      
                name = "";
                mob = "";
                return 1;
            }
            else
                return 0;
        }
};


//Edits the contact
bool contact :: edit(string new_name)
{
    string new_mob;
    if(new_name==name)
    {
        cout << "Enter new name: "; cin >> new_name;
        cout << "Enter new mobile no: "; cin >> new_mob;
       
        name = new_name;
        mob = new_mob;
        return 1;
    }
    else
        return 0;
}



int main()
{
    contact person[100];
           
    string temp_name, temp_mob;
    int choice, i, counter;
    bool flag;
    bool cancel_flag;
   
    cout << "**** PHONEBOOK ******" << endl;
   
   
    do
    {  
        cout << "\n\n\n";
        printline('-', 20);
        cout << "0. Show contacts" << endl
        << "1. Add Contact" << endl
        << "2. Edit Contact" << endl
        << "3. Delete Contact" << endl
        << "4. Search" << endl
        << "5. Quit" << endl << endl
        << "Your choice...";
        cin >> choice;
       
        system("cls");
        printline('-', 20);
        cancel_flag = 0;
        flag = 0;
        counter = 0;
       
        switch(choice)
        {
            case 0:
                cout << "Showing Contacts" << endl;
                printline('-', 20);
               
                for(i=0; i<100; i++)
                    if(person[i].show())
                        flag = 1;
               
                if(!flag)
                    cout << "No contacts found!" << endl;
                break;
               
            case 1:
                cout << "Add New Contact\t\t\t\tpress $ to cancel" << endl;
                printline('-', 20);
                counter = 0;
               
                //Loop until correct name and mobile number are entered
                do
                {
                    flag = 0;
                    if(counter)
                        cout << "Try again\t\t\t\tpress $ to cancel"
<< endl;

                    //counts how many times the do-while loop executes
counter++;
                       
                    cout << "Name: "; cin >> temp_name;
                   
                    //Cancel operation
                    if(temp_name=="$")
                    {
                        cancel_flag = 1;
                        break;
                    }
                    cout << "Mobile No.: "; cin >> temp_mob;
                   
                    //Cancel operation
                    if(temp_mob=="$")
                    {
                        cancel_flag = 1;
                        break;
                    }
                   
                    //Check whether name exists
                    for(i=0; i<100; i++)
                        if(person[i].name_exists(temp_name))
                        {
                            cout << "The name you entered is already there"
"in the phonebook, enter a different name."
<< endl;
                            flag = 1;
                            break;
                        }
                   
                }while(!name_valid(temp_name) ||
flag ||
!mob_valid(temp_mob));
               
                if(cancel_flag)
                {
                    system("cls");
                    break;
                }
           
               
                //This code adds the contact to phonebook   
                for(i=0; i<100; i++)
                    if(person[i].add(temp_name, temp_mob))
                    {
                        cout << "Contact added successfully!" << endl;
                        flag = 1;
                        break;
                    }
               
                if(!flag)
                    cout << "Memory full! Delete some contacts first."
<< endl;
                break;
               
            case 2:
                cout << "Enter a contact name to edit:"
"\t\t\t\tpress $ to cancel\n";
cin >> temp_name;
               
                //Cancel Operation
                if(temp_name=="$")
                {
                    system("cls");
                    break;
                }
               
                for(i=0; i<100; i++)
                    if(person[i].edit(temp_name))
                    {
                        cout << "Edited Successfully!" << endl;
                        flag = 1;
                        break;
                    }
               
                if(!flag)
                    cout << "Contact name not found!" << endl;
                break;
               
            case 3:
                do
                {
                    if(counter)
                        cout << "Try again" << endl;
                    counter++;
                    cout << "Enter a contact name to delete:"
"\t\t\tpress $ to cancel\n";
cin >> temp_name;
               
                    //Cancel Operation
                    if(temp_name=="$")
                    {
                        system("cls");
                        break;
                    }
               
               
                    //Final Confirmation
                    for(i=0; i<100; i++)
                    if(person[i].name_exists(temp_name))
                    {
                        flag = 1;
                        cout << "Are you sure you want to delete? (1/0)"
<< endl;
                        int yes;
                        cin >> yes;
                        if(!yes)
                        {
                            system("cls");
                            cancel_flag = 1;
                        }
                        break;
                    }
               
                    if(!flag)
                        cout << "Contact name not found!" << endl;
                   
                    if(cancel_flag)
                        break;
               
                    // This code deletes the contact
                    if(flag)
                    {
                        for(i=0; i<100; i++)
                            if(person[i].erase(temp_name))
                            {
                                cout << "Deleted successfully!" << endl;
                                break;
                            }
                    }
                   
                }while(!flag);
                break;
               
            case 4:
                do
                {
                    if(counter)
                        cout << "Try again" << endl;
                    counter++;
                    cout << "Search a name: \t\t\t\tpress $ to cancel\n";
cin >> temp_name;
               
                    //Cancel Operation
                    if(temp_name=="$")
                    {
                        system("cls");
                        break;
                    }
               
                    for(i=0; i<100; i++)
                        if(person[i].show(temp_name))
                        {
                            flag = 1;
                            break;
                        }
   
                    if(!flag)
                        cout << "Contact name not found" << endl;
                }while(!flag);
                   
                break;
               
            case 5:
                return 0;
                break;
           
        }
    } while(1);
   
    getch();
    return 0;
}

//prints a line
void printline(char ch, int size)
{
    for(int i=0; i<size; i++)
        cout << ch;
    cout << "\n";
}


//Contact name validation
bool name_valid(string tname)
{
   
    if(tname.size()>20)
    {
        cout << "Invalid Name!\nEnter a name within 20 characters!"
<< endl;
        return 0;
    }
    else if(tname == "")
    {
        cout << "Invalid Name!\nName cannot be blank!" << endl;
        return 0;
    }
    else
        return 1;
}

//mobile number validation
bool mob_valid(string tmob)
{
    if(tmob.size()>13 || tmob.size()<10)
    {
        cout << "Invalid mobile no.\nEnter a no."
"between 10 and 13 digits" << endl;
        return 0;
    }
    else if(tmob == "")
    {
        cout << "Invalid mobile no.\nMobile"
"no cannot be blank" << endl;
        return 0;
    }
    else
        return 1;

Test cases :

}
Der validation bool mob valid(strine toob) bool mob valid(strine toob input Zour choice...1 sis: 1s els: not found Add New Contact presa $ to cancel : asd Mobile No.: 9856321456 Contact added successfully 9. Show contacte 1. Md Contact 2. zdát Contact 3. Dolate Contact 4. tenet 5. Omit our choice...

5. Quis Your choice...0 sh: 1: cls: not found Showing Contacts asd 9856321456 0. Show contacts 1. Add Contact 2. Edit Contact 3. Delete Contact 4. Search 5. Quit Your choice...

Le number validation 30 bool mob valid( string tmob) input ning stions 0. Show contacts 1. Add Contact 2. Edit Contact 3. Delete Contact 4. Search 5. Quit 18.6K Your choice...2 sh: 1: cls: not found Press $ to cancel IN? Enter a contact name to edit: aad Enter new name: dsa Enter new mobile no: 12563298756 Edited successfully! rveys FUse. Contud Credits Online 7721

0. Show cea asta :. Ada Contact 2. Edie Contact 3. Delete Contact 4. Search 5. Quit Your choice...3 sh: 1: cls: not found press S to cancel Enter a contact name to delator asd Contact same not found! Try again Enter a contact name to delete: dsa Are you sure you want to deloto? (1/0) press $ to cancel Deleted successfully! FEZ