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(efaq)Indenting switch statements

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How do I change the indentation for `switch'?
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   Many people want to indent their `switch' statements like this:

     f()
     {
       switch(x) {
         case A:
           x1;
           break;
         case B:
           x2;
           break;
         default:
           x3;
       }
     }

   The solution at first appears to be: set `c-indent-level' to 4 and
`c-label-offset' to -2.  However, this will give you an indentation
spacing of four instead of two.

   The _real_ solution is to use `cc-mode' (the default mode for C
programming in Emacs 20 and later) and add the following line to yoyr
`.emacs':

     (c-set-offset 'case-label '+)

   There appears to be no way to do this with the old `c-mode'.