C Interview Questions and Answers

 

Why dont C comments nest?

Why don't C comments nest? How am I supposed to comment out code containing
comments? Are comments legal inside quoted strings?





C comments don't nest mostly because PL/I's comments, which C's are
borrowed from, don't either. Therefore, it is usually better to ``comment out''
large sections of code, which might contain comments, with #ifdef or #if 0 ).



The character sequences /* and */ are not special within double-quoted strings,
and do not therefore introduce comments, because a program (particularly one which
is generating C code as output) might want to print them. (It is hard to imagine
why anyone would want or need to place a comment inside a quoted string. It is easy
to imagine a program needing to print "/*".)

Posted by:Richards