Question

How to create a basic contact manager that allows users to add, search, and display contacts in C++

Answer 1

#include <iostream>
#include <string>
#include <vector>

struct Contact {
    std::string name;
    std::string phone;
    std::string email;
};

void addContact(std::vector<Contact>& contacts) {
    Contact newContact;

    std::cout << "Enter name: ";
    std::getline(std::cin, newContact.name);
    std::cout << "Enter phone: ";
    std::getline(std::cin, newContact.phone);
    std::cout << "Enter email: ";
    std::getline(std::cin, newContact.email);

    contacts.push_back(newContact);
    std::cout << "Contact added successfully!\n";
}

void searchContact(const std::vector<Contact>& contacts) {
    std::string query;

    std::cout << "Enter name to search: ";
    std::getline(std::cin, query);

    bool found = false;
    for (const auto& contact : contacts) {
        if (contact.name.find(query) != std::string::npos) {
            std::cout << "\nName: " << contact.name
                      << "\nPhone: " << contact.phone
                      << "\nEmail: " << contact.email << "\n";
            found = true;
        }
    }

    if (!found) {
        std::cout << "No contact found with that name.\n";
    }
}

void displayContacts(const std::vector<Contact>& contacts) {
    std::cout << "\n--- Contact List ---\n";
    for (const auto& contact : contacts) {
        std::cout << "Name: " << contact.name
                  << ", Phone: " << contact.phone
                  << ", Email: " << contact.email << "\n";
    }
}

int main() {
    std::vector<Contact> contacts;
    std::string choice;

    while (true) {
        std::cout << "\n1. Add Contact\n2. Search Contact\n3. Display All\n4. Exit\nChoose an option: ";
        std::getline(std::cin, choice);

        if (choice == "1") {
            addContact(contacts);
        } else if (choice == "2") {
            searchContact(contacts);
        } else if (choice == "3") {
            displayContacts(contacts);
        } else if (choice == "4") {
            std::cout << "Exit Contact Manager.\n";
            break;
        } else {
            std::cout << "Invalid option. Try again.\n";
        }
    }
}



/*
run:


1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 1
Enter name: aaa
Enter phone: 123
Enter email: aaa@email.com
Contact added successfully!

1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 1
Enter name: bbb
Enter phone: 456
Enter email: bbb@email.com
Contact added successfully!

1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 1
Enter name: ccc
Enter phone: 789
Enter email: ccc@email.com
Contact added successfully!

1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 2
Enter name to search: bbb

Name: bbb
Phone: 456
Email: bbb@email.com

1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 3

--- Contact List ---
Name: aaa, Phone: 123, Email: aaa@email.com
Name: bbb, Phone: 456, Email: bbb@email.com
Name: ccc, Phone: 789, Email: ccc@email.com

1. Add Contact
2. Search Contact
3. Display All
4. Exit
Choose an option: 4
Exit Contact Manager.

*/

 

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