Wallet (incomes and expenses)
Create a program to store your incomes and expenses in a database. You should be able to add incomes and
expenses to the database. For each entry the program should store the following data: date (year, month and
day), type (income or expense), category (like household, food, party, travel, scholarship, salary, money from
poker games, etc.), the amount (given in HUF, EUR or whatever you want). The program should be able to:
-load existing database into memory (create a new if there is no database yet),
-add new income/expense entry into the database,
-save the database (from the memory) into a file,
-create new categories on user’s request