Roman Numerals --> Integers

I am on chat and someone has asked me to solve this for them:

Quote:

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i have to write a program that converts Roman numerals into decimal equivalents
for example...if i Input XIV it should give me 14

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could someon help??

btw: it is for c++.. :)

Thanks,

each occurrance of following stands for

M - 1000

D - 500

CM - 900
CD - 400

C - 100

L - 50

XC - 90
XL - 40

X - 10

IX - 9

V - 5

IV - 4
I - 1



so by parsing out longest string possible and then integrate their meaning you get the result. Note they have to come in the order above, and each 5*10^n character may not appear more than once as well as 10^n character may not appear more than 3 times.

You can loop trough the string and sum up both their occurance and sum.