Assignment 4

• Complete your Unicalc Command-Line Interface (CLI), to give results similar to those of the test cases posted below.
• Point values for assignment 4 will be awarded as follows, depending on whether your CLI:
  • 5: reads pure numbers and evaluates them
  • 5: reads pure units and returns normalized quantities
  • 5: reads combined units and numbers (such as 234pounds)
  • 5: produces an error message when the expression does not evaluate
  • 5: produces a warning when there is a residue after parsable input
  • 5: evaluates products of units and numbers, using * and / operators
  • 5: produces an error message when the expression is not in the language
  • 10: evaluates powers (such as 3^4)
  • 10: handles parenthesized expressions
  • 10: evaluates sums and differences (and multiply divide) with proper left-right grouping (e.g. 2+3-4+5+6)
  • 10: evaluates sums, differences, and products with proper precedence (e.g. 2*3-4+5*6)
  • 10: formats Unicalc units nicely (such as 234 kg meter^2 / second^2, not as S expressions)
  • 15: evaluates products with juxtaposition denoting multiply (e.g. 234 kg m / second)
  • 5: (extra) handles decimal fraction coefficients, not just integers
  • 5: (extra) handles scientific notation exponents, e.g. 123.45e-6
  • 20: (extra) handles optional whitespace (e.g. 234    kg   *     meter   /   second   ^  2)
  • (up to)30: (extra) other cool stuff (properly documented for the user and grader)
• In addition, points can be subtracted for gross style and documentation violations. Please say briefly what your functions do, and format them nicely.
• unicalc-cli-tests.txt (Tests for the command-line interface)
• unicalc-cli-tests-out.txt (Output of tests for the command-line interface)
• unicalc-cli-tests-verbose-out.txt (Verbose output of tests for the command-line interface)