Using MIPS, write code that contains all subroutines and the code that allows you use these subroutines. The source code need to contain comments, to explain what you are doing

Exercise 1

Create a subroutine that keeps asking for a number until the user inputs a positive number. Once you have the positive number, the subroutine will return the value

Exercise 2

Create a subroutine to multiply two values and return the result

Exercise 3

Create a subroutine to calculate the x^z

Exercise 4

Write some code that utilizes the subroutines.