Thread

1. gg582 · 1789629513 · focus · HN ↗

   Some conventions are socially made... In C, some uses

   #if 0

       these_lines_are();
       not_executed();
   

   #endif

   but most of the cases people just use

   /* comments

   * these_lines_are();

   * not_executed();

   *

   * end comment */

   Then, why?

   #if 0

   #endif

   looks clear and it definitely says how a computer skips many lines.

   But we just don't use it because it implies low-level knowledge "that every C developers have"

   1. draven · 1789632672 · focus · HN ↗

      My C is really rusty but aren't those different ? If using #if/#endif the compiler won't even see the comments.

      1. gg582 · 1789973400 · focus · HN ↗

         Yep that's right. Using #if/#endif excludes whole lines(so compiler won't see any lines). And this difference can prevent when struggling with nested comments :)

Unofficial Hacker News client; not affiliated with Y Combinator.