Create a RISC-V program that can read the DNA string that is collected in a text file. Then, count the number of occurrences of character "A" and character "T" in the string.

Input the DNA string collected in a given text file. Suppose the DNA string length ranges from 40 - 100 characters.

Output should be in a message dialog box that includes

-- length of string

-- occurrence of "A" char

-- occurrence of "T" char

Note: activate input dialog settings -> click "pop dialog for input syscalls"