Digital Wallet App

Problem

A wallet is used to store money digitally and can be used to pay for services. Your task is to build a wallet that has the following abilities:

1. Register a user
2. Top up money to a user wallet
3. Check balance for a user
4. Transfer money between two users
5. View history of all transactions (global and for a user) All transactions are to be assumed to be within the ecosystem of the wallet i.e. you cannot send money to a person who is not registered on the same wallet system. All transactions should be recorded and be auditable.

---

Expectation

These abilities must be exposed via a command line interface. For example, you could make a menu-driven solution that reads like:

1. Register a user
2. Top up money into your digital wallet
3. Transfer Money to another wallet on the same system
4. Check balance
5. Check all transactions in the system
6. Check all transactions that a user has been a part of Please choose an option: The menu design (and the structure of the program) is up to you. You don’t need to persist the data; the assumption is that when the program restarts, the data will be lost.

---