How to use switch case and a loop together?

Write a program that calculates the amount of money accumulated in a savings account in one year. The program should input the initial deposit and the interest rate. The program should also input the frequency of compounding (options are monthly, quarterly, semiannually, and annually). Use the switch structure and a loop. Write an appropriate output statement.

I understand that I need to start with an input of the initial deposit and interest rate. Then I am going to use a menu to choose which kind of interest. I am just not sure how to format a loop with switch cases.

Any advice on where to begin?