唐纳德·克努斯的另一个经典作品:

注意上面代码中的bug; 我只是证明了它是正确的，并没有尝试过。

消毒:

//Forward declarations:

class X {}; // TODO: Remove {}  ! When we get X defined....

我曾经在一个用Paradox 3.5 -编写的大型预算系统工作多年后接到一个客户的电话

“我们在调试中遇到了一些注释”-

// This shouldn't happen, if it does, then the bits that automagically 
// worked when I wrote it have stopped working

．.． ！

// I know the line below is wrong, but it came that way from our IP vendor, and 
// the driver won't work if you "fix" it. I've had to revert this change 4 times
// now. Leave it alone, or I will hunt you down and hurt you
if (r = 0) {
    /* bunch of code here */
}
else
{
   /* even more code here */
}

离开我的上一份工作，我嵌入了一些ascii艺术到源代码…

                                      ,_-=(!7(7/zs_.             
                                   .='  ' .`/,/!(=)Zm.           
                     .._,,._..  ,-`- `,\ ` -` -`\\7//WW.         
                ,v=~/.-,-\- -!|V-s.)iT-|s|\-.'   `///mK%.        
              v!`i!-.e]-g`bT/i(/[=.Z/m)K(YNYi..   /-]i44M.       
            v`/,`|v]-DvLcfZ/eV/iDLN\D/ZK@%8W[Z..   `/d!Z8m       
           //,c\(2(X/NYNY8]ZZ/bZd\()/\7WY%WKKW)   -'|(][%4.      
         ,\\i\c(e)WX@WKKZKDKWMZ8(b5/ZK8]Z7%ffVM,   -.Y!bNMi      
         /-iit5N)KWG%%8%%%%W8%ZWM(8YZvD)XN(@.  [   \]!/GXW[      
        / ))G8\NMN%W%%%%%%%%%%8KK@WZKYK*ZG5KMi,-   vi[NZGM[      
       i\!(44Y8K%8%%%**~YZYZ@%%%%%4KWZ/PKN)ZDZ7   c=//WZK%!      
      ,\v\YtMZW8W%%f`,`.t/bNZZK%%W%%ZXb*K(K5DZ   -c\\/KM48       
      -|c5PbM4DDW%f  v./c\[tMY8W%PMW%D@KW)Gbf   -/(=ZZKM8[       
      2(N8YXWK85@K   -'c|K4/KKK%@  V%@@WD8e~  .//ct)8ZK%8`       
      =)b%]Nd)@KM[  !'\cG!iWYK%%|   !M@KZf    -c\))ZDKW%`        
      YYKWZGNM4/Pb  '-VscP4]b@W%     'Mf`   -L\///KM(%W!         
      !KKW4ZK/W7)Z. '/cttbY)DKW%     -`  .',\v)K(5KW%%f          
      'W)KWKZZg)Z2/,!/L(-DYYb54%  ,,`, -\-/v(((KK5WW%f           
       \M4NDDKZZ(e!/\7vNTtZd)8\Mi!\-,-/i-v((tKNGN%W%%            
       'M8M88(Zd))///((|D\tDY\\KK-`/-i(=)KtNNN@W%%%@%[           
        !8%@KW5KKN4///s(\Pd!ROBY8/=2(/4ZdzKD%K%%%M8@%%           
         '%%%W%dGNtPK(c\/2\[Z(ttNYZ2NZW8W8K%%%%YKM%M%%.          
           *%%W%GW5@/%!e]_tZdY()v)ZXMZW%W%%%*5Y]K%ZK%8[          
            '*%%%%8%8WK\)[/ZmZ/Zi]!/M%%%%@f\ \Y/NNMK%%!          
              'VM%%%%W%WN5Z/Gt5/b)((cV@f`  - |cZbMKW%%|          
                 'V*M%%%WZ/ZG\t5((+)L\'-,,/  -)X(NWW%%           
                      `~`MZ/DZGNZG5(((\,    ,t\\Z)KW%@           
                         'M8K%8GN8\5(5///]i!v\K)85W%%f           
                           YWWKKKKWZ8G54X/GGMeK@WM8%@            
                            !M8%8%48WG@KWYbW%WWW%%%@             
                              VM%WKWK%8K%%8WWWW%%%@`             
                                ~*%%%%%%W%%%%%%%@~               
                                   ~*MM%%%%%%@f`                 
                                       '''''                     

//把这个放在这里的人是个白痴…这根本不管用!

但是代码还在那里……