 programming language (  ).   , -
      ,
   ,       
 .  -,   
-        . -
   Linux   ,  Linux   
   .

 Shell, csh.  Shell     UNIX.    (Bill
Joy)  BSD UNIX.      ,   -
      . . .

cable modem ( ).  ,    Internet  
   .

cache ().      ,   -
  .      
    .        , 
        ,    
.

calling environment ( ).     , 
 . .  " "  9.

cascading stylesheet (  ). . CSS.

cascading windows ( ).   ,   ,
        .  
  .

case sensitive (   ()). ,   -
   .  vi  ,    -
,     ignorecase.  grep  -
       -i.

chain loading ( ).     ;

     ,   DOS 
Windows.

character class ( ).      , -
,        . 
      .  , -
  [abcr],   ,     , , 
 .    .

character device ( ). ,   .  -
      .   -
   . .   .

character-based (). ,   ,   
 ASCII.       , 
   ,     ,     -
 . .  GUI.

character-based terminal ( ). ,   
    . . .

checksum ( ).  ,    
           -
  .        -
      ,     . -
    ,        -
  .

 .                                                    967