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Finding the size of strings
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Finding the size of strings
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Expert
Joined: Wed Jun 30, 2010 7:15 am Posts: 179 
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 Finding the size of stringsHey,
I'm trying to figure out the size of a string -- in other words, I want to know how many characters it contains. So the string containing "Hello", for example, should give me "5". So this is what I tried: the code below was supposed to display how long the string was, but I never got anything other than 20 (I tried different string sizes, different variable names, etc.). Here's my code:
Thx, |
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| Mon Jan 30, 2012 7:25 pm |
 
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Rookie
Joined: Fri Jan 27, 2012 6:57 pm Posts: 40
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Re: Finding the size of strings Hi dimastero!
I believe you want the strlen() function. |
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| Mon Jan 30, 2012 8:13 pm |
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Expert
Joined: Wed Jun 30, 2010 7:15 am Posts: 179
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Re: Finding the size of strings Thanks! That was exactly what I was looking for
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| Mon Jan 30, 2012 9:03 pm |
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Moderator   Joined: Wed Mar 05, 2008 8:14 am Posts: 2864 Location: Rotterdam, The Netherlands
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Re: Finding the size of strings Internally, strings are always 20 long, this is no coincidence, it's the amount of characters you can put on the screen.
- Xander _________________ | Some people, when confronted with a problem, think, "I know, I'll use threads," | and then two they hav erpoblesms. (@nedbat) | My Blog: I'd Rather Be Building Robots | ROBOTC 3rd Party Driver Suite: [Project Page] |
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| Tue Jan 31, 2012 1:26 am |
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Guru  Joined: Sun Nov 15, 2009 5:46 am Posts: 1023
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Re: Finding the size of strings
That's one of the quirks about RobotC that always trips me. IMHO, strings can be used in a lot of situations, not just displaying on the LCD screen. For example, I could do string manipulation to/from a file. Limiting it to 20 characters seems short sighted. Another example is limiting the debug stream with the same restriction. And I can't even print a string with more than 2 substitutions. |
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| Tue Jan 31, 2012 7:00 am |
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