Maximum length for a name of a variable?

hello188 · Joined: 02 Jun 2010 Posts: 74

Hi. what is the maximum variable name length for CCS-C compiler??

anyone tried?

temtronic · Posted: Fri Sep 13, 2013 5:23 am

I'd _think_ ,_maybe_ 255, though you should try it yourself and report back.
Frankly, I use SHORT names as they're easier to type, easier to read, and easier to retype when I misspell them ! Then again, I grew up on a BASIC that only allowed 2 character variables.....ah, the 'good old dayze'.

jay

asmboy · Joined: 20 Nov 2007 Posts: 2128 Location: albany ny

I've never had the compiler complain about var_len.
And there is such an easy way to find out.

Have you tried it ?

Or put another way, are you an experimenter or not? Very Happy

temtronic · Posted: Fri Sep 13, 2013 7:54 am

Well you can tell I'm bored..cool,rainy,blaaa day here..

Did a simple test creating a char variable 26 characters long(every letter of the alphabet) and it was fine,kept doubling the length to 16 alphabets = 416 characters long..
..compiles just fine...

Sure wouldn't want to find a 'typo' in the variable name though!!

Jay

alan · Joined: 12 Nov 2012 Posts: 357 Location: South Africa

Maybe so, but the compiler only recognise the 1st 64 character. If your name is longer than that you can mispell or just leave it out.

Regards

hello188 · Joined: 02 Jun 2010 Posts: 74

Thank you!!

Depicci · Joined: 16 Sep 2013 Posts: 1 Location: Istanbul

You can try it if you have an output device or rs232 connection.
Create two variables for test
whatkindofsorceryisthis = '1'
whatkindofsorceryisthis2 = '2'
printf whatkindofsorceryisthis
if everything is ok extend variable name letter by letter and test it. The second variable should be different 'but just one letter' from the first one. When you obtain '2' as output, stop and count Smile

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

A BASIC compiler I used 35 years ago used the first six characters and the length of the variable name. It would have recognized whatkindofsorceryisthis2 as longer than whatkindofsorceryisthis.
_________________
The search for better is endless. Instead simply find very good and get the job done.

temtronic · Posted: Mon Sep 16, 2013 6:19 am

You can tell I don't want to do real work....
...this works fine....

//global variables
24: char qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnm=1;
25: char qqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnm=2;

from the listing....
jay

Ttelmah · Joined: 11 Mar 2010 Posts: 19513

The change needs to be at the _right end_ of the variable. Comparisons are done left to right.