Question

write a ContactBook in C++

1. ContactBook that holds 10 names with that names corresponding contact (last name and first name of the owner).
2. Ask the user to input up to 10 Contacts (It may be less. The user should have the ability to stop inputting Contacts whenever he wishes).

3.This class will store a list of Contacts in a stack allocated array of default capacity 10.

4.You must be able to add new contacts to a list, delete old contacts, update existing contacts, search for a contact, and display the entire contact list. All of these will be implemented as member functions. In addition you will have functions that will give you size of the list, get particular contact at a particular index location and any other necessary functions.

5.Write a driver program that will be a menu driven application. The program will create a single ContactBook which is empty in the main program. A menu will have the following options: 1) Add New Contact 2) Delete Old Contact 3) Display Contact Info (contact is identified by last name and first name) 4) Update Contact Info (contact is identified by last name and first name) 5) Display Entire Contact List 6)exit

Answer 1

code:

kindly upvote.

#include<bits/stdc++.h>
#include<iostream>
#include<string.h>
  
using namespace std;
  
#define MAXCONTACTS 10

int TOP;

struct stack_contact
{
int phoneNum; //to store phone number
char firstName[100]; //to store contacts first name
char lastName[100]; //to store contacts last name
};
stack_contact CONTACTS[MAXCONTACTS];


//stack initialization
void initialisestackcontact(){
TOP=-1;
}
// check if stack is empty or not
int isContactStackEmpty()
{
if(TOP==-1)
return 1;
else
return 0;
}

//check if stack is full or not
int isContactStackFull()
{
if(TOP==MAXCONTACTS-1)
return 1;
else
return 0;
}

void push(int phNum,char tempfirstName[],char templastName[])
{
if(isContactStackFull())
{
cout<<"Contact list is FULL.please delete some and add agin"<<endl;
return;
}
++TOP;
CONTACTS[TOP].phoneNum=phNum;
  
strcpy(CONTACTS[TOP].firstName,tempfirstName);
strcpy(CONTACTS[TOP].lastName,templastName);
cout<<phNum<<" has been inserted."<<endl;
}

void displayAllContacts()
{
int i;
if(isContactStackEmpty())
{
cout<<"contact list is EMPTY."<<endl;
return;
}
for(i=TOP;i>=0;i--){
cout<<CONTACTS[i].phoneNum<<","<<CONTACTS[i].firstName<<","<<CONTACTS[i].lastName << endl;
}
cout<<endl;
}

//DeleteContact - to remove item
void DeleteContact()
{
int temp;
if(isContactStackEmpty())
{
cout<<"contacts list is EMPTY."<<endl;
return;
}

temp=CONTACTS[TOP].phoneNum;
TOP--;
cout<<temp<<" contact has been deleted."<<endl;   
}
void print_contact(stack_contact e)
{
cout<<e.phoneNum<<" "<<e.firstName<<" "<<e.lastName;
}

void searchContact(char tempfirstName[],char templastName[])
{
for(int i=TOP;i>=0;i--)
{
if((strcmp(CONTACTS[i].firstName,tempfirstName) == 0) &&
(strcmp(CONTACTS[i].lastName,templastName)==0))
{
cout << "contact matched and found" << endl;
print_contact(CONTACTS[i]);
}
}

}
void updateContact(char tempfirstName[],char templastName[])
{
char first[100],last[100];

   int phone;
for(int i=TOP;i>=0;i--)
{
if((strcmp(CONTACTS[i].firstName,tempfirstName) == 0) &&
(strcmp(CONTACTS[i].lastName,templastName)==0))
{
cout << "contact matched and found" << endl;
cout << "enter first , last name and phone to be updated to?" << endl;
cin >> first >> last >> phone;
strcpy(CONTACTS[i].firstName,first);
strcpy(CONTACTS[i].lastName,last);

  CONTACTS[i].phoneNum=phone;
cout<<CONTACTS[i].firstName<<" has been updated."<<endl;
}
}

}
int main()
{
int phoneNumber;
char firstName[100];
char lastName[100];
char reqFirstName[100];
char reqLastName[100];

initialisestackcontact();

char ch;

do{
int a;
cout<<"Chosse \n1.add contact\n"<<"2.delete contact\n"<<"3.display all contacts\n"
<<"4.display particular contacts\n" <<"5.update particular contacts\n";
cout<<"Please enter your choice: ";
cin>>a;
switch(a)
{
case 1:
cout<<"Enter a phone Number: ";
cin>>phoneNumber;
cout<<"Enter First Name:";
cin>>firstName;
cout<<"Enter Last Name:";
cin>>lastName;
push(phoneNumber,firstName,lastName);
break;

case 2:
DeleteContact();
break;

case 3:
displayAllContacts();
break;
  
case 4:
cout <<"enter last name to be serached:";
cin>>reqLastName;
cout<<"enter first name to be searched:";
cin>>reqFirstName;
searchContact(reqFirstName,reqLastName);
break;
  
case 5:
cout <<"enter last name to be updated:";
cin>>reqLastName;
cout<<"enter first name to be updated:";
cin>>reqFirstName;
updateContact(reqFirstName,reqLastName);
break;

default :
cout<<"An Invalid Choice!!!\n";


}
cout<<"Do you want to continue ? ";
cin>>ch;
}while(ch=='Y'||ch=='y');
return 0;
}

output:

kindly upvote.

Thanks,

Chandana