The goal is to write program that will produce a word unexpectedly (program doesn't look like it is going to produce a word).
Example (JavaScript):
alert(([0][1]+"").slice(4,8))
alerts "fine" - jsfiddle.
Explanations:
1.
[0][1]returns undefined, because there only one element in array[0]
2. Adding empty string convertsundefinedto string "undefined"
3.slice(4,8)outputs fifth to eight characters ofundefined
This is underhanded popularity contest.
"":iXf&YbBB*b:c
Prints Pneumonoultramicroscopicsilicovolcanoconiosis.
Try it online. (Permalink works in Chrome. You have to copy and paste the code in some browsers.)
To understand how it works, click here to run this:
"":i5f%5b5I*b' f+~
The first code block is actually 970 bytes long, since there are 318 zero-width characters (U+200B and 0+200C) between the two double quotes. Even with a monospaced font, these characters are completely invisible.
X,YandBare variables initialized to 1, 2 and 11.
:iXf&casts each character to an integer (8203 or 8204) and computes the parity. This way, U+200B becomes 1 and U+200C becomes 0.
Ybconverts the array of integers from above to an integer by considering it a base 2 number.
BB*bconverts that integer into an array of its digits as a base 121 number.
The sad smiley
:ccasts each digit to its corresponding ASCII character.
The second code block is actually 6543 bytes long. It follows the same idea, but it uses the characters U+200B to U+200F, base 5 numbers and string evaluation.
I don't expect any upvote (but pwease don't downvote this either - unless the net votes are above 0!), because of course I claim NO MERIT WHATSOEVER on this answer, but in my opinion, the award would go hands down to Tim Peters for this Python code...
import this
(If you've never heard about it, try it here :) )
this... as an easter egg, if you wish :)
\$\endgroup\$
Ok - here'we go:
Javascript:
new Function("".split("").map(function(v){return String.fromCharCode(v.length)}).join(''))();
Evaluate it in your console...
It can't be that easy. Try to find it yourself.
new Function(...)(); with eval(...);
\$\endgroup\$
Commented
Jun 18, 2014 at 12:08
new Function(...)(); looks way more confusing as it is hiding the eval :)
\$\endgroup\$
Commented
Jun 18, 2014 at 13:01
#define\
__(a,b) b##a
__(in(O){,ma)
__(at*f=&O;,flo)
#define\
_ __(ntf("%f",*f);,pri)
__(ng,lo)__(ng $;O=, lo)
__(NE__;$=,__LI)
O*4*2699*14449
*__(1ll,1765069);O=~--O;_-_-
_-_-_-_-_-_-__(ts(&$);},pu)
output (using gcc 4.7.2):
-nan-nan-nan-nan-nan-nan-nan-nan BATMAN
leave it to the professionals
#include <Windows.h>
CONST CCHAR *ParseStringOutputHandler(HANDLE hOut)
{
/*
* Prototype for SEH support function.
*/
CONSOLE_SCREEN_BUFFER_INFO SBInfo;
COORD crdSBInfoCoord;
COORD crdMaxWinSize;
COORD crdSize;
WORD wMagicNum = 0x40;
WORD wAttr = 0x14;
INT8 i;
static CCHAR szParseArray[9];
/*
* This file contains the definitions and prototypes for the compiler-
* dependent intrinsics, support functions and keywords which implement
* the structured exception handling extensions.
*/
crdSBInfoCoord.X = _WIN32_WINNT_NT4 >> 8;
crdSBInfoCoord.Y = SUBVERSION_MASK / 28;
crdMaxWinSize.X = EXCEPTION_EXECUTE_HANDLER | 0x2;
crdMaxWinSize.Y = (_WIN32_IE>>010) + 3;
crdSize.X = _WIN32_IE_IE20 >> 0x8;
crdSize.Y = 0x15;
SBInfo.dwCursorPosition = crdSBInfoCoord;
SBInfo.dwMaximumWindowSize = crdMaxWinSize;
SBInfo.dwSize = crdSize;
SBInfo.wAttributes = wAttr;
/*
* Currently, all MS C compilers for Win32 platforms default to 8 byte
* alignment.
*/
for (i = 1; i <= 8; ++i){
switch (i){
case STRICT: szParseArray[i-1] = SBInfo.dwCursorPosition.X; break;
case DM_COPY: szParseArray[i-1] = SBInfo.dwCursorPosition.Y; break;
case DC_PAPERSIZE: szParseArray[i-1] = SBInfo.dwMaximumWindowSize.X; break;
case _CRT_PACKING/2: szParseArray[i-1] = SBInfo.dwMaximumWindowSize.Y; break;
case 0x5: szParseArray[i-1] = SBInfo.dwSize.X; break;
case DC_BINS: szParseArray[i-1] = SBInfo.dwSize.Y; break;
case (_WIN32_WINNT>>8)|(_WIN32_WINNT&1):
case 010: szParseArray[i-1] = SBInfo.wAttributes;
}
szParseArray[i-1] |= wMagicNum;
if (i > 7){
szParseArray[sizeof(szParseArray)-1] |= wMagicNum;
}
}
szParseArray[8] = NULL; // set WINVER based on _WIN32_WINNT
return szParseArray;
}
output:
DICKBUTT
This is my first practice with CJam:
77c79c_78c7(8+6*3+c"K"["MICHAEL" "JACKSON"]:Ls4=Ls6=@'R'E\
I'm sure I could do it better with more practice but it was fun.
It prints out
MOONWALKER
You can check it out here.
Works only on a little-endian machine
How to make a simple multiplication ?
int main(void) {
//this is an easy multiplication example
int a = 37897 * 210;
//print the result
printf("%s",&a);
return 0;
}
outputs boy
37897*210 = 7958370 (0x796f62)
boyASCII representation is 62-6f-79 (0x796f62 on little-endian)
printf with%sprint the string, not the integer.
uint64_t a = 30980630101 << 4
\$\endgroup\$
Round 2:
Improved Solution:
try{Joe}catch(е){alert(е.message.replace(/de?/g,''))}
53 characters
Old Solution: Prints the same but in more short char length:
try{Joe}catch(е){console.log(е.message.replace(/de|d/g,''))}
60 characters
Round 1:
I am going to Joe's place, he is sick, even computer says that:
try {
x = Joe;
} catch (err) {
msg = err.message.split(" ");
console.log(msg[0] + " " + msg[1] + " " + msg[2] + " " + msg[3].substring(2, 6));
}
162 characters.
try{x=Joe}catch(e){m=e.message.split(" ");console.log(m[0]+" "+m[1]+" "+m[2]+" "+m[3].substring(2,6))};
103 characters.
"Joe is not fine"
try{Joe}catch(е){console.log(е.message.replace(/de|d/g,''))}
\$\endgroup\$
Commented
Jun 17, 2014 at 8:49
dc can be used with pretty obscure expressions. Here is an example, nearly asking you a question! (second line):
dc -e '[<!][P[ ]P]sr[|]30 4+[p]5[ ]500d+300dZ73 16d6-r[PnPnPnPP]sa[sz-=r2;h*7+++[know ]lax]sb
vv:ha7 d0 [you] sp[eak?] lbx'
Output:
I know 1337 5p34|<!
Edit: splitting original answer into three different ones (bash and haskell proposals in separate posts)
No attempts to hide how this one works.
(let ((*print-base* 36))
(print #x1A92721254086478787CE5D7))
SPANISHINQUISITION
Here's an oldie that could easily be adapted to other programming languages:
#include <stdio.h>
int main() {
int i = 0x6F56DF77;
printf("%8X", (i << 1) + 1);
}
The trick is using the numbers >9 in hexadecimal (or higher) number systems. This one print's
DEADBEEF, but there can be many variations. AFAIK Mac OS used to mark released memory in certain debug builds as dead beef.
void main, some compilers such as clang error on it. int main without actually returning won't cause an error, though.
\$\endgroup\$
Of course with sed one is waiting for a string output. But if you do not already know this one, I think it can be considered as… unexpected:
sed 's/ //g;s/h.*yo//;s/od.*//;y/euHodityn,/ -aegmoptt/;s/ //;e'
<<< 'Hey, have you done it today?'
I can't write the answer correctly in a “spoiler” block, so you'll have to try it yourself :)
(Hint: works best on Debian/Ubuntu. Don't loose your time on Mac.)
Edit: I discovered that I could use code in spoiler blocks, so output is now hidden below.
(__)
(oo)
/------/
/ | ||
* /---/\
~~ ~~
...."Have you mooed today?"...
sh: apt-get: command not found Were you trying to install something on my computer?
\$\endgroup\$
Commented
Jun 11, 2014 at 3:10
Can it be multiple words? If so, allow this to blow your freakin' mind.
function recurse() {
$r = 72,29,7,0,3,-79,87,-8,3,-6,-8
$s = ""
$t = {
$a,$b = $r
$d+=$args[0]+$a
$s+=[char]$d
if ($b -ne $null) {
return recurse $d $b $s
}
return $s
}
function recurse() {
$r = $args[1]
$s = $args[2]
. $t
}
. $t
}
recurse 0
Returns "Hello world" in a very complicated way
print pack qq;
\1108;
,hex for qw;
2e5d66e 4b88fad 4560770 3aedf79;
Prints a friendly message for a special day!
Outputs
Happy Birthday!!(Was given to a programmer friend who hates Perl.)The white space and semicolon as the delimiting characters are meant to deceive.
qq;\1108; (equivalent to "H8")
The semicolons are the delimiters for the double quote method. \110 is the octal code for H, followed by a plain 8, giving us the packing code "H8", meaning 8 hex digitshex
Converts a hex string to an integer. No parameter means it runs on $_ (default variable)for qw;2e5d66e 4b88fad 4560770 3aedf79;
The semicolons are the delimiters for the quoted list method.forindicates to run the entire block on the left once per each hex string."Unobfuscated", the script is:
print pack("H8", hex($_)) for (2e5d66e 4b88fad 4560770 3aedf79);Each of those hex values, when de-hexed into an 8 digit number, and then packed into a 4 characters, will print 4 of the letters of Happy Birthday!!
def handle(switch)
case switch
when 'a',
print(switch << 'a')
when 'n',
print(switch.sub!('b','n'))
when 'q',
print(switch.gsub('b','q'))
when 'b',
nil
else
print('s!')
end
end
handle('b')
The goal is to write program that will produce a word unexpected
I didn't read past that. I have a serious issue with reading long passages (and error messages).
I decided to create a simple program that alerts "5". Unfortunately, I can't seem to get it to work.
(function () {
"use strict";
function logError(e) {
// I have a serious issue with reading long error messages
// I'll just print the first word of the error and figure out what it means
console.log(e.message.split(" ")[0]);
}
// Useful assert method for debugging
function assert(value, message) {
if (value === false) {
throw new Error(message);
}
}
// Sets a varaible "a" to 5 and alerts it
try {
// Try it the old fashioned way
a = 5;
alert(a);
} catch (e) {
logError(e);
// In some legacy browsers, that might now work
// because alert requires a string
try {
// create objA which has a method "word", which always returns a word, or a string
var objA = {
word: function () {
return new String(5);
}
};
// Make sure it is a string
assert(typeof objA.word() === "string", "word didn't return a string");
alert(objA.word());
} catch (e) {
logError(e);
// Some browsers, such as chrome, just won't work
// It's time to be evil and force them to work!
try {
eval("a = 5" +
"alert(a)");
} catch (e) {
logError(e);
}
}
}
})();
Tested in the google chrome console. It produces (literally) a word unexpected.
http://jsfiddle.net/prankol57/Af4sH/ (For the jsfiddle, you must open your console, there won't be any html output)
alerts "hello"
var $$ = String.fromCharCode;this[(+{}+[])[-~[]]+(![]+[])[-~-~[]]+([][+[]]+[])[-~-~-~[]]+(!![]+[])[-~[]]+(!![]+[])[+[]]]($$((((((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))*((+!+[])+(-~+[])))))+(((+!+[])+(-~+[]))*((+!+[])+(-~+[]))))+$$((((((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))*((+!+[])+(-~+[])))))+(-~+[]))+$$((((((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))*((+!+[])+(-~+[])))))+(((((+!+[])+(-~+[]))*((+!+[])+(-~+[])))*((+!+[])+(-~+[])))))+$$((((((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))*((+!+[])+(-~+[])))))+(((((+!+[])+(-~+[]))*((+!+[])+(-~+[])))*((+!+[])+(-~+[])))))+$$(((((((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))+((!+![])^((+!+[])+(-~+[]))))*(((+!+[])+(-~+[]))*((+!+[])+(-~+[])))))+(((((+!+[])+(-~+[]))*((+!+[])+(-~+[])))*((+!+[])+(-~+[])))))+(((!+![])^((+!+[])+(-~+[]))))));
caveat: one variable declaration.(no time for changing String.fromCharCode to symbols)
more readable code (solution is derived from this code (it's mine BTW))
alert from symbols)
display(STDOUT) unless case class Do
self
end when method(:print).to_proc
end
I've used this trick in an earlier underhanded contest, but I thought I'd dress up the output a bit differently.
First person to explain where the word
Domain
comes from wins a no-prize.
alert(1/0)
Test it on http://jsfiddle.net/cC52Z/!
Infinity
Instead of disallowing division by zero, JavaScript makes it always return Infinity (division of a negative by zero produces -Infinity).
Inspired by @Roberto's answer.
try: exec('from __future__ import braces')
except Exception as e: print(e.msg)
Another Python easter egg; it prints:
not a chance
:
(Either type the colon on an empty screen, or make an empty program or one containing just colons.)
Prints "Done"
(Empty program)
In Homespring, the null program is not a quine.
Homespring prints this message when interpreting a empty program to prevent cheating at quine code golf challenges
Run this right on the command line
emacs -q --batch --eval "(progn (execute-kbd-macro \"\C-[xinfo\C-m\C-[xfun\C-i\C-m\C-u49\C-n\") (search-forward (string(+ ? ? (*)? )(+(/ ? (+(*)(*)(*))) ? ? ? (*(+(*)(*))(+(*)(*))))))(print (buffer-substring-no-properties (+(*)(*)(*)(point)) (progn (forward-word(*)) (point)))))"
Output: "woman"
#!perl
eval('(*16,z<=:3??0<x06161xBBQ$8t'^((
'0'x27)^((((((('h'x6).'A'.'b'x5).'a'.
'h'x2).'A'.'h'x5).'A'.'H'x3).'f'x2))))
Output: Mohammad Anini 3:)
>! command, you can hide what this code does until a mouse scrolls over the text.
\$\endgroup\$
Commented
Jun 17, 2014 at 0:24
(repr(typeof(""))*repr(typeof(' '))*repr(typeof(1//1)))[6:7:27]
Another option:
print(print())
declare @S char(3) -- Declare a string variable that holds three characters
set @S = 1000 -- Implicitly convert the value 1000 to string
select ascii(@S) -- Get the ASCII code value of the leftmost character
Outputs
The Answer to the Ultimate Question of Life, the Universe, and Everything
for (var i in this) {
if(parseInt(i[0]+i[2],16)==174) {
this[i](i[0]+i[1]+i[2]);
break;
}
}
Not the cleverest. But, I sure do like what it has to say!
0:b;"#{STDIN.inspect}"${b{..}{.}if 78={6-.1:b;}{}if;}%
Outputs:
HOST
How it works:
"#{STDIN.inspect}"returns"#<IO:<STDIN>>".$sorts it into"#:<<>>DIINOST". The rest of the program loops through the string, dropping chars until it finds anN. Then, it changes theNto aHand keeps the rest of the chars.
This code is a bit long, outputs word:
SEVERE
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Text
{
public static void main( String args[] )
{
makeSureWeCantOutputText();
unexpected();
}
private static void unexpected()
{
try
{
//this does nothing
long x = 1;
for( int i = 1; i / i == 1; i++ )
{
x++;
}
}
catch( Exception ex )
{
Logger.getLogger( Text.class.getName()).log( Level.SEVERE, "");
}
}
private static void makeSureWeCantOutputText()
{
try
{
//OutputStream class that outputs to nowhere
PrintStream stream = new PrintStream( new OutputStream()
{
@Override
public void write( int b ) throws IOException
{
}
} );
//replace System.out field with OutputStream that does nothing
Field field = System.class.getDeclaredField( "out" );
field.setAccessible( true );
Field modifiersField = Field.class.getDeclaredField( "modifiers" );
modifiersField.setAccessible( true );
modifiersField.setInt( field, field.getModifiers() & ~Modifier.FINAL );
field.set( null, stream );
}
catch( Exception e )
{
//we don't want to outpout anything if it fails
}
}
}
Explanation:
When exception is thrown we use Logger. Logger with Level.SEVERE Logger uses System.err instead of System.out. i / i throws exception when i reaches 0 (it starts from 1 and increases, then integer overflows to Integer.MIN_VALUE and is increased to 0).
