How old is Adaline?

Computer Science Level 1

What would the following haskell code print? 

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current_year = 2015   
andy_birth = 1984   
andy_minus_adaline = 4   
adaline = andy - andy_minus_adaline   
andy = current_year - andy_birth   

main = putStrLn $ show adaline

Bonus: How does a similar piece of code behave in each of Python ? What about Mathematica?

Inspiration: Calvin's Problem

1998 31 Error 27

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Agnishom Chattopadhyay by Agnishom Chattopadhyay , 22, India

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1 solution

If you have read the solution here , you might be thinking what the difference between that code and this code is.

There isn't. The difference is in the paradigm of programming: Haskell and Mathematica are functional languages where = is actually a definition, not an assertion.

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