Refactor options $3$ and $4$ to be user$-$defined functions $-$ as a note, the functions can be void $($self$-$contained$)$

Create option $5,$ which will allow the user to calculate weekly pay. The option will prompt the user for the number of hours worked and the hourly pay. Please note that you will need to handle an overtime situation. Overtime is calculated at $1\mathrm{.}5$ times hourly rate for each hours over $40$ hours. You must use a function called calculatePay that takes $2$ parameters: rate and hours. The function will return a double that is the calculated pay.

Create option $6,$ which will prompt the user for a savings account balance and an annual interest rate. Create a void function displayInterest that will display the balance of the savings account for the next five years. Just so you know, each year, you will need to add the accrued interest to the balance and display it$.$