Placement of variable declarations in C

Posted Oct 27, 2007 15:58 UTC (Sat) by tjc (guest, #137)
In reply to: Placement of variable declarations in C by RobSeace
Parent article: A potential competitor for GCC: pcc

Just declare one "int i;" at the top of the function, and use it in ALL for() loops! ;-)

If you're not too set in your ways you might want to try "int ii;" instead. I've been doing this for a few years, and while it looks odd at first, I got used to it. It's a lot easier to find "ii" in code; searching for "i" is futile.

(off-topic) Searching for variables

Posted Nov 18, 2008 18:40 UTC (Tue) by pjm (guest, #2080) [Link]

You would benefit a lot from learning regular expressions. If you use vim, then it suffices to type * when the cursor is over an i variable to find all occurrences of i as a word (so excluding if etc.).

Many IDEs go one step farther and allow searching for just the current variable as distinct from other variables & functions of the same name.

Incidentally, I hope that the original poster is joking (as the ;-) suggests) in the suggestion to use a shared variable for all temporaries. Such sharing makes it harder to modify one use of the variable because one needs to check whether subsequent code is using the resulting value.