It's easier for me to count it as two, as that's how my OS counts it. If anyone knows a way for a Windows 7 user to use the other option, be my guest.

First entry!

Thanks to Juju with his 159 byte solution in Python! (counting newline as CRLF, as my OS does)

No, do not check for positive-integer-ness unless you really want to. It at least has to give the right result for the test cases.
Yes, Xeda, whatever you want. Just make it work at least with the test cases.
Yes, PM me any solutions.
Yes, z80 is judged by its final size. So would Axe.
Yes, printing HAPPY/UNHAPPY would also be acceptable.

EDIT: Oh, and I will reveal all solutions in spoilers in the OP.
My own solution in TI-BASIC is 71 bytes (minus the name). Let's see who can do better...

This is the first of what I hope to be many contests I will hold here on Omnimaga: Code Golf.

Code golf is a competition where you have to solve a coding challenge in the fewest bytes possible. For example, a TI-BASIC entry for a prime tester could be:Input N:0:If N and not(fPart(N:2=sum(seq(not(fPart(abs(N)/I)),I,1,abs(N:Ans(note that this is not the speediest it could be, but speed is not factored in your score, only size)
The score would be 34 bytes (for TI-BASIC programs, score=size - 9 - length of name). The lowest score out of the entries will be the winner.

How this tournament will work:
First off, you need to code an actual program that will solve the given problem (or at least give the right result for all the test cases ). All languages are allowed, including calc languages and computer languages. When you have an entry, PM it to me, and I will test it if possible (but just in case I don't have an Nspire or I can't download the latest version of Perl or some such problem, try if you can to give back the results of any and all given test cases). I will then save your entry and update the scores accordingly.
After one week, a winner shall be determined in each language category, as well as the smallest overall. In each language category, the winners shall all suggest possible problems for the next competition. I shall pick the next challenge out of these, and present test cases for any possible input or output. Also, you will get to see everyone else's solutions for the previous challenge.

Please, ask any and all questions that you may have about the contest!

NEXT: Here
PREVIOUS: Here

Challenge 1

Problem
Determine if an inputted number is happy. Happy numbers are defined like this: Take any positive integer, replace it with the sum of the squares of its digits, and repeat the process until it equals 1 or it loops indefinitely in a loop that does not include 1. If it ends up with 1, the number is happy, otherwise it's sad.
Deadline
July 21, 2014, 1:00 AM EST
Sample input 1:
1
Sample output 1:
HAPPYSample input 2:
1337
Sample output 2:
HAPPYSample input 3:
385
Sample output 3:
Either one of
SADor
UNHAPPY
Ranking

Python

Rank	User	Size	Date	Code
1	willrandship	94	7/19/2014 11:16:56 PM	Spoiler For Spoiler: x=input();b="UNHAPPY" for a in b:  z=0  for y in str(x):z+=eval(y)**2;x=z print(b[(z==1)*2:7])
2	Juju	148	7/15/2014 4:22:50 PM	Spoiler For Spoiler: def h(n):  while n>1 and n!=4:   n=sum(dict([(c,int(c)**2)for c in"0123456789"])[d] for d in str(n))  return n==1 print(("SAD","HAPPY")[h(input())])

Golfscript

Rank	User	Size	Date	Code
1	Runer112	32	7/15/2014 5:17:50 PM	Spoiler For Spoiler: ~{`0\{48-.*+}/}9*("SAD""HAPPY"if

CJam

Rank	User	Size	Date	Code
1	Runer112	30	7/15/2014 5:17:50 PM	Spoiler For Spoiler: q~{Ab0\{_*+}/}9*("SAD""HAPPY"?

TI-83+ BASIC

Rank	User	Size	Date	Code
1	calc84maniac	46	7/16/2014 5:03:49 PM	Spoiler For Spoiler: Repeat Ans<5 sum(.5×√int(10fPart(Ans/10^(cumSum(binomcdf(98,0→A End "HAPPY If log(A "SAD Ans
2	Runer112	46	7/16/2014 5:09:28 PM	Spoiler For Spoiler: Repeat A≤4 iPart(10fPart(Ans10^(~cumSum(binomcdf(14,0 sum(Ans²→A End "HAPPY If log(A "SAD Ans
3	Hayleia	71	7/16/2014 2:18:36 AM	Spoiler For Spoiler: Prompt N Repeat N=1 or N=4 sum(seq((10fPart(iPart(N10^(~I))/10))²,I,0,14→N End "HAPPY If N=4 "SAD Disp Ans

TI-83+ z80

Rank	User	Size	Date	Code
1	Runer112	58	7/20/2014 9:32:08 PM	Spoiler For Spoiler: ;#SECTION "MAIN", CODE    org   userMem - 2    db   0BBh, 6Dh Start:    B_CALL   _RclAns StepLoop:    push   bc    sbc   hl, hl    ld   b, h DigitPairLoop:    dec   e DigitLoop:    ex   de, hl    xor   a    rrd    ex   de, hl    ld   c, a SquareLoop:    add   hl, bc    dec   a    jq   nz, SquareLoop    ld   a, (de)    or   a    jq   nz, DigitLoop    ld   a, e    cp   (OP1 + 2) & 0FFh    jq   nz, DigitPairLoop    push   hl    B_CALL   _SetXXXXOP2    rst   30h    pop   hl    pop   bc    djnz   StepLoop    dec   l    ld   hl, UnhappyStr    jq   nz, Unhappy    inc   hl    inc   hl Unhappy:    B_CALL   _PutS    ret ;#SECTION "StrData", DATA UnhappyStr:    db   "UNHAPPY", 0
2	calc84maniac	60	7/16/2014 12:12:44 PM	Spoiler For Spoiler: #define bcall(xxxx) rst 28h \\ .dw xxxx #define _RclAns $4AD7 #define _PutS $450A #define OP1 $8478         .org $9D93     .db $BB,$6D     bcall(_RclAns)     ex de,hl HappyCalcLoop:     xor a     ld c,a     ld d,a     ld e,a HappyByteLoop:     ;Carry is reset, upper nibble of A is 0     dec l HappyNibbleLoop:     rrd     ld b,a HappyMulLoop:     push af      add a,e      daa      ld e,a      ld a,c      adc a,d      daa      ld d,a     pop af     djnz HappyMulLoop     ccf     jr c,HappyNibbleLoop     ld a,l     sub (OP1+2)&$FF     jr nz,HappyByteLoop     ld (hl),d     inc l     ld (hl),e     inc l     inc (hl)     jr nz,HappyCalcLoop     ld hl,HappyString     dec e     jr z,$+4     dec hl     dec hl     bcall(_PutS)     ret     UnhappyString:     .db "UN" HappyString:     .db "HAPPY",0

Batch

Rank	User	Size	Date	Code
1	JWinslow23	182	7/19/2014 7:26:37 PM	Spoiler For Spoiler: @set/p#= :@ @set $=0&@for /f "delims=" %%a in ('cmd /U /C echo %#%^|find /V ""')do @set/a$+=%%a*%%a @set #=%$%&@if %$% neq 1 if %$% neq 4 goto @ @if %$%==1 (echo happy) else echo sad

Language Ranking

Rank	Lang	User	Size	Date
1	CJam	Runer112	30	7/15/2014 5:17:50 PM
2	Golfscript	Runer112	32	7/15/2014 5:17:50 PM
3	TI-83+ BASIC	calc84maniac	46	7/16/2014 5:03:49 PM
4	TI-83+ z80	Runer112	58	7/20/2014 9:32:08 PM
5	Python	willrandship	94	7/19/2014 11:16:56 PM
6	Batch	JWinslow23	182	7/19/2014 7:26:37 PM

And here I was hoping it'd be a bit more complicated than that.

I should put this on my calc when I have time. I would like to try all 2048 Axe clones, though. I wonder how good the grayscale in yours look like on a real calc.

Also, how are the small fonts done? Are they custom fonts or is this just an image?

Well, the grayscale looks fine on an actual calc.

And the small fonts you are talking about? Those are all Bitmaps, drawn with the Bitmap() command. Every "block" of text that is not an original TI font is drawn with a Bitmap of some sort. (It's the only way I could get everything I wanted to fit to fit!)

After many long days of work, I am finally done.

This is a collection of phrases that describe the number of letters that the phrase has. For example, "a two written next to a one" describes 21, and has 21 letters.
Here are some examples from 1 to 100:A
Bi
Tri
Four
Fifth
Sextet
Seventh
TwoCubed
Composite
Triangular
LucasNumber
ZodiacNumber
UnluckyNumber
EInHexadecimal
PentatopeNumber
FourthPowerOfTwo
TenPlusSixPlusOne
FiftyEightModForty
PrimeAfterSeventeen
PositionOfTheLetterT
ATwoWrittenNextToAOne
SecondMultipleOfEleven
SmallestPrimeOverTwenty
SeventeenPlusTwoPlusFive
AreaOfSquareWithWidthFive
HalfOfAStandardDeckOfCards
SquareRootOfSevenTwentyNine
TheOnlyTwoDigitPerfectNumber
DaysInFebruaryIfItIsALeapYear
SmallerCoprimeNumbersArePrimes
BaskinRobbinsHasThisManyFlavors
PowerOfTwoInWhichDigitsArePrimes
ElvisPresleyIsCastInThisManyFilms
NinthIntegerInTheFibonacciSequence
TheSumOfTheCubesOfTheFirstTwoPrimes
NumberOfPianoKeysThatAreASharpOrFlat
TheNumberOfFederalReserveBanksInTheUS
ItsFormInBinaryIsOneZeroZeroOneOneZero
WriteTheFirstOddPrimeNextToItsOwnSquare
AtomicNumberOfTheElementKnownAsZirconium
ForMexicansThisNumberIsConsideredAGaySlur
ItsTheAnswerToLifeTheUniverseAndEverything
SmallestPrimeThatIsntTheSumOfTwoPalindromes
RetiredMLBNumberForHankAaronAndReggieJackson
TheTelephoneDialingCodeForTheCountryOfDenmark
ItIsTheValueInDecimalForTheASCIICodeForAPeriod
ThisNumberAppearsInAlmostAllTheStarTrekEpisodes
InternationalDirectDialCodeForPhoneCallsToPoland
NumberOfStringsOnTheHarpAndNumberOfKeysOnACelesta
TheNumberOfStatesThatAreInTheUnitedStatesOfAmerica
TheTopSecretAircraftTestingFacilityInSouthernNevada
TheNumberOfWeeksThatAreInAYearInTheGregorianCalendar
ItsTheThirdNumberNWhichDividesTheSumOfTheFirstNPrimes
NumberOfColoredStickersOnEachOfTheSquaresOnARubiksCube
LargestNumberInTheFibonacciSeriesThatsATriangularNumber
AsHardToBelieveAsItSoundsItsATownNameInTheStateOfMontana
TheModelNameOfACarMadeByTheGermanAutomobileCompanyMaybach
ItIsTheSmallestSmithNumberForWhichTheSumOfItsDigitsIsPrime
TheNASCARDriverMarcosAmbroseRacesWithThisNumberOnHisRacecar
TheNumberOfSecondsInAMinuteAndAlsoTheNumberOfMinutesInAnHour
TheSmallestPrimeForWhichItsReversalIsAlsoAPerfectSquareNumber
TheOnlyNumberWhoseCubeIsMadeOfThreeDigitsThatEachOccurTwoTimes
TheAlphanumericalValueOfThisNumbersRomanNumeralIsThisSameNumber
ThisIsTheNumberOfSquaresThatAreOnTheChessBoardOrTheCheckersBoard
TheSmallestNumberThatBecomesSquareIfItsReverseIsAddedOrSubtracted
WellItGoesThroughStLouisJoplinMissouriAndOklahomaCityLooksSoPretty
TheSmallestPrimeWhichBecomesPandigitalWhenItIsRaisedToTheTenthPower
AsADecimalNumberThisNumberIsTheLastTwoDigitNumberToAppearInPisDigits
YouHaveADirtyMindIfYouThinkOfThisNumberHowIThinkYouAreThinkingOfItNow
ItsTheLargestNumberNSuchThatTheSumOfTheDigitsOfTwoToThePowerOfNEqualsN
TheNumberOfDifferentCharactersThatCanBeUsedWithAStandardEnglishKeyboard
TheSmallestNumberThatRaisedToTheFifthPowerIsTheSumOfFiveOtherFifthPowers
ItsTheTwentyFirstPrimeItsReverseIsTheTwelfthAndItsAlsoAPalindromeInBinary
OnePlusTwoPlusThreePlusSixPlusNinePlusTenPlusTwentyPlusFortyMinusSeventeen
TheSmallestNumberThatIsPandigitalInQuaternaryAsInItIsOneThousandTwentyThree
OnePlusOnePlusTwoPlusTwoPlusThreePlusThreePlusThreePlusTenPlusSixtyMinusNine
ThisisTheSmallestPositiveIntegerThatRequiresFiveSyllablesInTheEnglishLanguage
IfYouAddUpTheGiftsInTheSongTheTwelveDaysOfChristmasTheyWouldAddUpToThisInteger
TheSmallestNumberThatCannotBeRepresentedAsTheSumOfFewerThanNineteenPowersOfFour
TheAtomicNumberOfTheElementKnownAsMercuryAnElementWhichWasOnceUsedInThermometers
ThisNumberIsTheOnlyPositiveRealNumberBesidesOneThatIsTheSquareOfTheSumOfItsDigits
TheInternationalStandardBookNumberGroupIdentifierForBooksThatWerePublishedInNorway
TheSmallestPrimeNumberWhichIsTheSumOfAPrimeNumberOfPrimeNumbersInAPrimeNumberOfWays
TheSmallestNumberThatIsAlsoTheSumOfThreeDistinctPrimesRaisedToDistinctPrimeExponents
TheSmallestNumberWhichCanAlsoBeExpressedAsTheSumOfTwoDistinctSquaresInTwoDistinctWays
TheLargestNumberNSuchThatTwoToThePowerOfNDoesNotContainAZeroDigitInItsDecimalExpansion
TheNumberOfYearsBetweenTheSigningOfTheDeclarationOfIndependenceAndTheBattleOfGettysburg
TheNumberOfConstellationsUpInTheSkyAsCurrentlyDefinedByTheInternationalAstronomicalUnion
TheSmallestPrimeWhichIsAConcatenationOfPToThePowerOfQAndQToThePowerOfPWherePAndQArePrimes
IfAnAngleInEuclideanGeometryHasAMeasurementOfThisManyDegreesThatMeansTheAngleIsARightAngle
InUSCentsThisIsTheSumOfTheValuesOfOneEachOfAllTheCoinsOfDenominationsThatAreLessThanADollar
TheNumberOfWaysThatEightQueensCanBePlacedOnAnEightByEightChessboardSoNoTwoCanAttackEachOther
OnePlusOnePlusTwoPlusTwoPlusThreePlusThreePlusThreePlusFourPlusFourPlusTenPlusTwentyPlusForty
ThisIsTheSmallestEvenNumberWithMoreThanOneDigitWhichHasNoRepresentationAsTheSumOfTwoTwinPrimes
TheRacingNumberThatWasOnRacecarLightningMcQueenTheMainCharacterInTheDisneyPixarAnimatedFilmCars
AlthoughThisMightBeHardToBelieveThisNumberIsActuallyTheNameOfASmallCityInTheStateOfSouthCarolina
TheLargestPrimeNumberUnderOneHundredAndAlsoTheLargestTwoDigitNumberWhereTheSumOfItsDigitsIsSquare
TheHighestJerseyNumberOneMayWearInTheNationalHockeyLeagueAsNinetyNineWasRetiredToHonorWayneGretzky
InTheUKAndIrelandThisIsTheNameOfAnIceCreamConeWithACadburyChocolateFlakePressedHalfwayInTheIceCream
OnTheCelsiusScaleThisNumberOfDegreesWhichIsTwoHundredTwelveDegreesFahrenheitIsTheBoilingPointOfWaterI spent a LONG time on these.

Are there any improvements you can think of? Do you not get a reference that a certain phrase makes? Please, give me feedback.