DCT1033 Function

Rewrite the following program, run and  show it output

 

Write function declaration for the following function:

1. Computing a sales commission, given the sales amount and the commission rate.
2. Printing the calendar for a month, given the month and year.
3. Computing a square root.
4. Testing whether a number is even, and returning true if it is.
5. Printing a message a specified number of times.
6. Computing the monthly payment, given the loan amount, number of years, and annual interest rate.
7. Finding the corresponding uppercase letter, given a lowercase letter.