#Simple Calculator Interpreter written in Haskell#

Takes a mathematical expression in form of a string, tokenizes, parses and evaluates to a result.

##Installation Instructions##

• Clone project into local repository
• Install Haskell
• cabal install

##Run Program##

• Navigate to src folder
• Run ghci in terminal
• :load Main
• Enter expression string eg interpret "123+4*13"
• Program can handle integers, multiplication, division, addition, subtraction and parenthesis. Do not use spaces.

##Run Tests##

• Navigate to root folder
• Run stack test
• Watch tests turn green

##Authors ##

• Rosie Gollancz
• Laura Weston
• Chris Lawrence
• Lilian Breidenbach

with a little help from [Bartosz Milewski] (https://www.schoolofhaskell.com/school/starting-with-haskell/basics-of-haskell)