In this exercise you will write a program that reads in a string from the user using a READ syscall then you will process this string by writing a subroutine that turns the possible newline character (from the enter key) into a null character so that you can use the string with our various string functions. You will then run the input string through a version of strlwr() that you will create. Finally print out the string using a WRITE syscall with the help of the array counting code to ensure that you print the correct number of characters. Your code will include at a minimum the following subroutines:

A subroutine to replace the terminating newline character from the keyboard buffer with a null character

A subroutine to make our string lower case

A subroutine that counts the number of values in an array of bytes.

Your code must be assembled and linked using the dynamic linker (not GCC).

(ARM ASSEMBLY LANGUAGE)