Menu-Driven program for Phone Directory

Problem Statement: Write a menu-driven program for using switch-case with following features:

• Store Contact numbers of people
• Search for the Contact numbers using their names
• Search for the Contact numbers using their number
• Delete a Contact number
• Update a Contact number

Examples:

Approach: The idea is to use switch case for switching the case for menu-driven program for the phonebook directory and store the contact number in the hash-map and search the contact in the hash-map in O(1) time.

Below is the implementation of the above approach:

Output:

👁 Image