Roman Numeral Calculator

This repo should demonstrate a coding kata in the "c" language to add and subtract roman numeral values.

Environment Requirements:

• Ubuntu Linux 14.04
• The C programming language
• GNU GCC compiler tool chain
• GNU Make
• Check unit testing framework ( https://libcheck.github.io/check/ )
• git

Setup Notes to Add to Vagrant

• vagrant and hyper-v on windows
• sudo apt-get install build-essential
• sudo apt-get install check
• sudo apt-get install zsh
• sudo apt-get install git
• sudo apt-get install pkg-config

Roman Numeral Rules

• Roman numerals consist of the following letters: I, V, X, L, C, D, and M which mean one, five, ten, fifty, hundred, five hundred and one thousand respectively.
• No more than 3 I,X,C (e.g. IIII, XXXX, CCCCCC)
• No more than 1 V,L,D (e.g. VV, LL, DD)

Strategy

I = 1 V = 5
I+V = 4 II + V = 3 III + V = 2 IIII + V = !

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1-5 = (-4) 1+1-5 = (-3) 1+1+1-5 = (-2)

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[[1][5]] = 4 [[1][1][5]] = 3 [[1][1][1][5]] = 2 [[1][1][1][1][5]] = !

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q: for 3995, how many M's can I fit? a: 3 with 995 remainder q: for 995, how many Ds can I fit? a: 1, or you could fit a CM which is 900

MMMDCCCCLXXXXV ! invalid - 4 Cs 4 Xs should be MMMCMVC
To Reduce, adding IV 4 and IX 9 etc. will allow more reduced combinations.

TODO:

• sanitize inputs, capitalize all inputs
• add constants for return codes
• make shell/command line that can take inputs

Running the app to see test output

make
./bin/roman