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# Say Given a number from 0 to 999,999,999,999, spell out that number in English. ## Step 1 Handle the basic case of 0 through 99. If the input to the program is `22`, then the output should be `'twenty-two'`. Your program should complain loudly if given a number outside the blessed range. Some good test cases for this program are: - 0 - 14 - 50 - 98 - -1 - 100 ### Extension If you're on a Mac, shell out to Mac OS X's `say` program to talk out loud. ## Step 2 Implement breaking a number up into chunks of thousands. So `1234567890` should yield a list like 1, 234, 567, and 890, while the far simpler `1000` should yield just 1 and 0. The program must also report any values that are out of range. ## Step 3 Now handle inserting the appropriate scale word between those chunks. So `1234567890` should yield `'1 billion 234 million 567 thousand 890'` The program must also report any values that are out of range. It's fine to stop at "trillion". ## Step 4 Put it all together to get nothing but plain English. `12345` should give `twelve thousand three hundred forty-five`. The program must also report any values that are out of range. ### Extensions Use _and_ (correctly) when spelling out the number in English: - 14 becomes "fourteen". - 100 becomes "one hundred". - 120 becomes "one hundred and twenty". - 1002 becomes "one thousand and two". - 1323 becomes "one thousand three hundred and twenty-three". ## Running the tests To run the tests, run the command `busted` from within the exercise directory. ## Further information For more detailed information about the Lua track, including how to get help if you're having trouble, please visit the exercism.io [Lua language page](http://exercism.io/languages/lua/about). ## Source A variation on JavaRanch CattleDrive, exercise 4a [http://www.javaranch.com/say.jsp](http://www.javaranch.com/say.jsp) ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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63 entries across 63 versions & 1 rubygems