# Goodbye Cruel World!

## Background

Hello golfers! I would like to learn all the programming languages! But I kinda have a short attention span... and copying all the Hello World examples gets boring... but I like fire! ^w^

## Challenge

So here is the plan! I want you all to write the smallest code that will compile, print Goodbye Cruel World!, and then crash. Or, as a bonus twist challenge, print Hello World! and crash with Goodbye Cruel World!

## Rules

• Your score will be total character count used. The answer must be a whole executable program.
• Your program must print Goodbye Cruel World! to output, and then crash (unexpected error).
• For a score bonus, you must print Hello World! to output instead, but the error message must also contain Goodbye Cruel World!. If you complete the bonus challenge, you may divide your score by 2. (Include a ! at the end of your score if you are claiming the bonus!)
• As long as the standard output still prints, and standard error still prints, the order doesn't matter. Just as long as neither can block the other from happening.
• The output must contain the contents of the above; " shouldn't appear in the output.
• The output should contain the specified string, and nothing else.
• The crash report can contain anything, but to claim the bonus, the following regex should match /Goodbye Cruel World!/mi (aka, contains, ignore case/surrounding text))
• The strings Hello World! and Goodbye Cruel World! are case insensitive, but otherwise should appear exactly as above.
• If the language is capable of crashing (it cannot change its exit code), it needs to crash. Otherwise use the standard "error report" (i.e., STDERR) for the language.

I can crash Python 3, so I have included an example Python 3 answer! Now lets all set the world on fire! ^W^

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Unassembled listing:

B4 09       MOV  AH, 9              ; DOS display string function
CD 21       INT  21H                ; print and say goodbye
BYE DB 'Goodbye Cruel World!$'  ## Explanation This will first display the string below without terminating the program. It will then continue to execute the subsequent memory contents as random CPU instructions, including jumps to other code, hardware, etc. This will actually crash DOS to the point that a hard reset (power cycle) of your PC will most likely be required. # Octave, 28 bytes disp"Goodbye Cruel World!" d  Try it online! This displays "Goodbye Cruel World!" in the shortest possible way in Octave (by skipping the parentheses and avoiding a space). The d on the next line is an undefinied variable, so it errors with the message: error: 'd' undefined near line 2 column 1 error: called from .code.tio at line 2 column 1  If it's OK to output: ans = Goodbye Cruel World! then it can be 24 bytes. ## PHP, 26 Goodbye Cruel World!<?=!a;  • This doesn't crash. In fact, this only throws a warning which usually are disregarded. Basically, your code is just Goodbye Cruel World! which is incorrect. If you want to crash, do <?x();, which will throw an exception in PHP 7+. – Ismael Miguel Jun 8 '17 at 21:41 # Arcplus, 25 bytes (p "Goodbye Cruel World!"  • The stderr output doesn't contain Goodbye Cruel World as required for the bonus multiplier. – L3viathan Jun 8 '17 at 15:14 • @L3viathan the spec doesn't specify STDERR: but the debug must also contain – Skidsdev Jun 8 '17 at 15:17 • @L3viathan it doesn't output the exact string though, due to the spaces vs underscores, so I'll change it anyway – Skidsdev Jun 8 '17 at 15:18 • Yeah, that's what I meant, I didn't complain that it wasn't stderr. – L3viathan Jun 8 '17 at 15:25 # TI-BASIC, 24 bytes (which happens to be 4!) :Disp "GOODBYE CRUEL WORLD! :{  Displays the string, then partially defines a list, causing a syntax error. • If you replaced the "{" with a "(", you could have a frowny emoticon as the last line. Would that have the same effect? – eaglgenes101 Oct 30 '17 at 22:31 • @eaglgenes101 No. ( does not define a list, it just groups expressions. – Scott Milner Oct 30 '17 at 22:49 # Go, 76 bytes, score 38! package main func main(){print("Hello World!");panic("Goodbye Cruel World!")}  (Edit: switch strings around). Formatted: package main func main() { print("Hello World!") panic("Goodbye Cruel World!") }  No semicolon in formatted version because of the line breaks. https://play.golang.org/p/DM48LwZ_0T Might be able to reduce this with a wizardry int-->string hack, but whatever. • Switch the strings around. "Hello World" should be in STDOUT, and "Goodbye Cruel World!" should be in the error message. (for the bonus challange) – Tezra Jun 8 '17 at 20:54 • Go's print() prints to STDERR, not STDOUT. You have to use fmt for printing to STDOUT. – totallyhuman Jun 10 '17 at 20:40 • @totallyhuman Is that not a compile/runtime configuration? The Go spec only defines it as "prints all arguments; formatting of arguments is implementation-specific" so the Go code itself is correct, no? – AniSkywalker Jun 11 '17 at 21:03 # Ruby, 43 42 bytes/2 = 21! puts"Hello World!" -"Goodbye cruel World!"  Saved half a byte with the help of Alexis Andersen, by replacing "String"/0 with -"String". This only "works" with Ruby versions lower than 2.3, in which the unary minus method was actually added to the String class! With Ruby < 2.3: $ ruby -e 'puts"Hello World!";-"Goodbye cruel World!"'
Hello World!
-e:1:in <main>': undefined method -@' for "Goodbye cruel World!":String (NoMethodError)


With Ruby >= 2.3:

$ruby -e 'puts"Hello World!";"Goodbye cruel World!"/0' hello world! -e:1:in <main>': undefined method /' for "Goodbye cruel World!":String (NoMethodError)  • you can save (half) a byte by using - on the string instead of / i.e. -"Goodbye crueld World!" – Alexis Andersen Jun 9 '17 at 15:24 • @AlexisAndersen thanks! Today I also learned about a new method in the String class (see updated post) – daniero Jun 9 '17 at 19:20 # Julia, 30 bytes !print("Goodbye Cruel World!")  Eagerly prints "Goodbye Cruel World!", then tries to NOT the return value and crashes because performing a NOT on a void value is not defined. # Pyth, 38 / 2 = 19 bytes! 36 / 2 = 18 bytes! "Hello World!"v"Goodbye Cruel World!  Test it online! Explanations It prints Hello World!, then try to evaluate Goodbye Cruel World!. It fails doing it, because that string is not a valid code. The result is: Hello World! Traceback (most recent call last): File "pyth.py", line 760, in <module> File "<string>", line 4, in <module> File "/app/macros.py", line 1085, in Pliteral_eval File "/app/.heroku/python/lib/python3.4/ast.py", line 46, in literal_eval File "/app/.heroku/python/lib/python3.4/ast.py", line 35, in parse File "<unknown>", line 1 Goodbye Cruel World! ^ SyntaxError: invalid syntax  # SmileBASIC 3, 28 bytes Tries to call a function named the empty string, which of course doesn't exist. There's probably a better way to make a SB program crash, but this way is only 5 characters, so I'm not complaining. ?"Goodbye Cruel World! CALL"  • Using a weird bug: ?"Goodbye Cruel World!";? – 12Me21 Mar 3 '18 at 16:14 # Kotlin, 89/2= 44.5 bytes! Pretty much the same as the java answer fun main(args:Array<String>){ println("Hello world") throw Error("Goodbye cruel world!")}  Try it online! Output: Hello world Exception in thread "main" java.lang.Error: Goodbye cruel world! at Simplest_versionKt.main(Simplest version.kt:8)  # Alice, 44 40 bytes, score 22 20! "!dlroW olleH"d&oGoodbye Cruel World!é  Try it online! -4 bytes by finding an interpreter bug. ### Explanation "!dlroW olleH" push this string (one character at a time) d stack depth &o output that many bytes  print debug information  The Alice interpreter is written in Ruby, which can be strict about character encoding. When the debug command attempts to output the é (or any character in the range 0x80-0xFF) at the end of the program, this character is interpreted as ASCII-8BIT instead of UTF8, causing a crash. Mode: Cardinal Grid: v "!dlroW olleH"d&oGoodbye Cruel World!Mode: Cardinal Grid: v "!dlroW olleH"d&oGoodbye Cruel World!/opt/alice/state.rb:234:in write': "\xE9" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError) from /opt/alice/state.rb:234:in <<' from /opt/alice/state.rb:234:in block (2 levels) in print_grid' from /opt/alice/state.rb:234:in each' from /opt/alice/state.rb:234:in block in print_grid' from /opt/alice/state.rb:233:in each' from /opt/alice/state.rb:233:in each_with_index' from /opt/alice/state.rb:233:in print_grid' from /opt/alice/state.rb:221:in print_debug_info' from /opt/alice/interpreter.rb:16:in rescue in <main>' from /opt/alice/interpreter.rb:13:in <main>'  • – R. Kap Jun 13 '17 at 0:00 # PHP, 24 bytes <?d'Goodbye Cruel World!  Produces: Parse error: syntax error, unexpected ''Goodbye Cruel World!' (T_ENCAPSED_AND_WHITESPACE) in [...][...] on line 1  # JavaScript (ES6), 43 / 2 = 21.5 bytes! alertHello World!['Goodbye Cruel World!']  The same method as OrphanBot, but saves a few bytes with ES6 template strings. • Hello and welcome to the site. It is customary to put separate languages in separate answers. The site may prompt you not to but thats SE's policy not ours. – Wheat Wizard Jun 15 '17 at 1:27 # Haskell, 54 53 bytes, score 27! 26.5! main=putStr"Hello World!">>fail"Goodbye Cruel World!"  Try it online! Outputs Hello World! and produces the following error message: .code.tio: user error (Goodbye Cruel World!)  Edit: -1 byte/-0.5 score thanks to @nimi for suggesting fail. • fail instead of error. – nimi Jun 8 '17 at 20:53 • @nimi Thanks! I didn't know about fail before. – Laikoni Jun 15 '17 at 15:59 # Swift - 50 bytes, 25 points after bonus print("Hello World!\nGoodbye Cruel World!") [0][1]  • Can you do something like print("Goodbye Cruel World");1/0, instead of using fatalError? – Rɪᴋᴇʀ Jun 16 '17 at 16:12 • @Riker my understanding was that the good bye had to come after the error – Alexander Jun 16 '17 at 16:19 • @Riker cool, I'll fix it when i get on my computer, thanks – Alexander Jun 16 '17 at 16:26 • @Riker Division by a zero literal is a compile time error – Alexander Jun 16 '17 at 16:50 • – Alexander Jun 16 '17 at 17:03 # F#, score: 32! [<EntryPoint>]printf"Hello World" failwith"Goodbye Cruel World!"  Try it online! # SmileBASIC, 44/2 = 22 bytes! At first I thought there would be no way to get the bonus, since errors in SB only show a specific message along with the line number (ex: IF without THEN in 0:4) But then I remembered that MML (the language used for playing music) gives more detailed error messages, which display the code that caused the error! ?"Hello, World! BGMPLAY"Goodbye Cruel World!  Output: Hello, World! Illegal MML in 0:2(BGMPLAY:1) Goodbye Cruel World! ^ Missing number (in Track 0)  The error occurs because the o (set octave) command expects a number. # Kotlin, 88 bytes/2=44 bytes! fun main(a:Array<String>){print("Hello World!") throw Exception("Goodbye Cruel World!")}  Try it online! • Using @EndermanAPM Error instead of Exception would yield 84/2 or 42. – JohnWells Apr 1 '18 at 2:05 # Assembly (MIPS, SPIM), 97 92 bytes .data a: .asciiz "Goodbye Cruel World!" .text .globl main main: li$2 4
la $4 a syscall j$0


Try it online!

Not gonna lie, i haven't touched MIPS in a long time. Plus i'm not familiar with what shortcuts i can use with SPIM, but i'm satisfied.
For those of you not familiar with mips, the dumbed down version: data declares allocated data (obviously) which in our case is the ascii string. Text is our function space, and main is our main method. Interestingly, mips lacks a native output, so we need a system call for this.
li $2 4 means load immediate, or put a number in this register. In this case 4, to the$V0 register. This will tell the system call what it's doing, and 4 roughly means "print text"

la \$4 a Next, we load the address of our text into a register so that the system call knows what it's printing.

Then we call syscall our system call.
To break it, i jump to 0 which is essentially a goto. 0 is not a valid target, so it errors. This saves 5 bytes over divide by zero.

# Edit: Safe Alternative 112 Bytes.

Try it online!

If you're not fond of a program running until it essentially overflows the stack, this will create an exception and exit safely thereafter. This one does so by trying to read from a misaligned location, which is a few bytes shorter than divide by zero.

• Quick note: jump to 0, aside from causing errors, is an incredibly unexpected behavior - what it does is fail spectacularly. Afaik most emulators for mips will just error and call it a day, though i can't vouch for all of them. If this behavior is too much of a "watch the world burn" i can tone it down to whatever is desired, i guess – Andrew Baumher Aug 21 '19 at 3:00
• extra credit for crashing the system, not just a program :) – roblogic Aug 21 '19 at 3:51

# Wren, 37 bytes

-System.print("Goodbye Cruel World!")


Try it online!

## Explanation

              "Goodbye Cruel World!"  // Define the string "Goodbye Cruel World!"
System.print(                      ) // Output the string to STDOUT
-                                     // Apply negation upon the returned string
// which is "Hello World". Negation on strings
// isn't defined in Wren.

• Definitely thank you for the explanation. – the default. Dec 27 '19 at 14:00

# BRASCA, 332928 27 bytes

-4 bytes
-2 bytes thanks to Command Master

!dlroW leurC eybdooG[o]~o


Try it online!

## Explanation

!dlroW leurC eybdooG              - Push "Goodbye Cruel World!", reversed
[o]           - Output the stack
~o        - Attempt to print a character with codepoint -1, which crashes.

• Wouldn't !dlroW leurC eybdooG[o]1-o work and be shorter? – Command Master Jan 27 at 12:00
• You can also use ~ instead of 1- – Command Master Jan 27 at 12:06

# F#, 71 bytes

[<EntryPoint>]
let main a=
printfn"Goodbye Cruel World!"
a.[0]|>int


Try it online!

The function main takes an array of strings a and has a return value of integer. The program attempts to get index 0 of the arguments, even though there are no arguments. The |>int converts a.[0] to an int, or otherwise, the program wouldn't compile because the return value has to be int. The boilerplate code [<EntryPoint>] kind of made it necessarily long but you, unfortunately, cannot get rid of it.

• Welcome to CGCC! Here is a Try it online! link for your submission which makes it easier for others to test your solution. – Laikoni Jan 27 at 9:27
• I don't now much about F#, but at least the Hello-World Example on TIO runs fine without the [<EntryPoint>] boilerplate, so it might be worth checking out when exactly it is needed. Try it online! – Laikoni Jan 27 at 9:29
• I just found there is an implicit entry point. Then the whole main is not needed and just printfn"Goodbye Cruel World!";[].[0] would work with the same error: Try it online! – Laikoni Jan 27 at 9:55
• @Laikoni thank you very much! – root Jan 27 at 13:35

# Perl 5, 43/2 = 21.5 bytes!

say'Hello World!';die'Goodbye Cruel World!'


Pretty straightforward. die just crashes the program with the given error message plus some extra fluff.

• Can't remember the exact rule but this program doesn't run without the -E flag, so you need to add at least one byte. – pipe Jun 10 '17 at 13:27
• @pipe The -E flag is allowed on this site without a penalty, since it's arguably the "normal" way of writing a perl one-liner. – Chris Jun 10 '17 at 21:24

# Ruby, 38 bytes, score 19!

p"Hello World";"Goodbye cruel World".q


Run with ruby -e

• The output should contain the specified string, and nothing else. -- This prints extra quotes around the string. – daniero Jun 11 '17 at 2:50

## APL, 28

÷~×⍴⎕←'Goodbye Cruel World!'

This first displays the text, then tries to take the reciprocal ÷ of the not ~ of the sign × (an integer 1) of the length ⍴ of the text. As the sign of the length will always be 1, the not of which is 0, the reciprocal will produce a DOMAIN ERROR.

In all fairness, ngn\apl does not crash, rather will output infinity. Nearly all other (legacy) APLs such as Dyalog, APL2000, and IBM APL2, do not handle NaNs or +/-Inf and will crash as expected.

• You can just remove ~×⍴ since the reciprocal of a string gives a DOMAIN ERROR on all APL systems. – Adám Jun 9 '17 at 12:11

# Kitanai (28 bytes)

print"Goodbye Cruel World!"z

It just prints "Goodbye Cruel World!" then tries to call unknown function z (so it crashes)

# Lua, 47 / 2 == 23 bytes

Prints "Hello World!" to STDOUT, then crashes with "Goodbye cruel world!" and a stack trace to SDTERR.

print"Hello World!"
error"Goodbye cruel world!"


# Micro, 24 20.5

"Hello, World!":\"Goodbye, cruel world"0/


Previous version, no bonus:

""Goodbye, cruel world"0/


# Pyth -- 38/2 = 19 !

K" World!"p"Hello"Kp"Goodbye Cruel"KsG


Try It

# Java 6, 83 bytes, Score 41.5!

Java 6 loaded static initializers before searching for the main method, making it possible to bypass the lengthy main signature. However, past 6, it first looks for the main method and then static initializers, making this solution void.

class A{static{System.out.print("Hello World!");new Long("Goodbye Cruel World!");}}


Expanded:

class A {
static {
System.out.print("Hello World!");
new Long("Goodbye Cruel World!");
}
}
`