Homework 7

This program is work 15 points.

• Be able to work with functions in MIPS assembly language.

There are several modifications to the problem.

• You must read in both the ciphertext and the key however
  • You may not assume the text is in all uppercase and contains no white space. You should
    • Input each string
    • Remove all whitespace from the string.
    • Convert the remaining characters to uppercase.
  • You may assume that the text contains only white space and alphabetic characters.
  • you may assume that the strings will contain no more than 100 characters.
• You must use this code.
  • You must use the main routine as written.
  • You may not declare any additional variables in the .data section.
  • You may not delete any code in any of the functions provided.
• Your final output should include the ciphertext, the key and the message. In the fallowing example, input is in bold.

   sgz		VQbuqaf rw	slc
  A c M
  Ciphertext: SGZVQBUQAFRWSLC
  Key       : ACMSENDMOREMONKEYS
  Message   : SENDMOREMONKEYS
      

Your code should be well documented. One comment per high level C++ code at least.

Your code should be well formatted.

Submission