Post by thread:[PICLIST] Problem with strings with hi-tech

I want to declare an array of strings like : const unsigned char Str1 [2][5] = {"Hello", "Bye "}; My problem is the compilator doesn't put the null caracter (\0) at end of each string. I also try : const unsigned char Str1 [2][6] = {"Hello", "Bye "}; but it also doesn't work. Please can someone help me? Jonathan Poulin Technicien en électronique et programmeur Nova Biomatique Inc spam_OUTjpoulinTakeThisOuTnovabiomatique.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Try this: const unsigned char Str1 [2][5] = {"Hello\0", "Bye \0"}; That should put an explicit NULL at the end of each string. Microchip wrote: {Quote hidden}> > I want to declare an array of strings like : > > const unsigned char Str1 [2][5] = {"Hello", "Bye "}; > > My problem is the compilator doesn't put the null caracter (\0) at end of each string. > > I also try : > > const unsigned char Str1 [2][6] = {"Hello", "Bye "}; > > but it also doesn't work. > > Please can someone help me? > > Jonathan Poulin > Technicien en électronique et programmeur > Nova Biomatique Inc > .....jpoulinKILLspam@spam@novabiomatique.com > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

That seems odd, I thought ANSI compliant C's automatically appended the null. Maybe manually adding the terminating null as an escape sequence to each string will work. Like this: const unsigned char Str1 [2][6] = {"Hello\x000", "Bye \x000"}; Paul {Quote hidden}> I want to declare an array of strings like : > > const unsigned char Str1 [2][5] = {"Hello", "Bye "}; > > My problem is the compilator doesn't put the null caracter (\0) > at end of each string. > > I also try : > > const unsigned char Str1 [2][6] = {"Hello", "Bye "}; > > but it also doesn't work. > > Please can someone help me? > > Jonathan Poulin > Technicien en ilectronique et programmeur > Nova Biomatique Inc > jpoulinKILLspamnovabiomatique.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

> From: Microchip [.....microchipKILLspam.....novabiomatique.com] > > I want to declare an array of strings like : > > const unsigned char Str1 [2][5] = {"Hello", "Bye "}; > > My problem is the compilator doesn't put the null caracter > (\0) at end of each string. > > I also try : > > const unsigned char Str1 [2][6] = {"Hello", "Bye "}; > > but it also doesn't work. > > Please can someone help me? Using PIC-C 7.87PL2, I wrote the following code: #include <pic.h> const unsigned char Str1 [2][6] = {"Hello", "Bye "}; void main(void) { int i; i = (Str1[2][3] == 'q'); return; } and looking at the listing, I see: 18 0009 _Str1 19 0009 3448 retlw (((048h))) 20 000A 3465 retlw (((065h))) 21 000B 346C retlw (((06Ch))) 22 000C 346C retlw (((06Ch))) 23 000D 346F retlw (((06Fh))) 24 000E 3400 retlw 0 25 000F 3442 retlw (((042h))) 26 0010 3479 retlw (((079h))) 27 0011 3465 retlw (((065h))) 28 0012 3420 retlw (((020h))) 29 0013 3420 retlw (((020h))) 30 0014 3400 retlw 0 The NULLs are being allocated at the end of each string as (0x000E and 0x0014) as I would expect. -Mike -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

On Thu, Oct 25, 2001 at 04:06:16PM -0400, Microchip wrote: > I want to declare an array of strings like : > > const unsigned char Str1 [2][5] = {"Hello", "Bye "}; > > My problem is the compilator doesn't put the null caracter (\0) at end of each string. > On GCC it truncates. > I also try : > > const unsigned char Str1 [2][6] = {"Hello", "Bye "}; > > but it also doesn't work. It worked here. > > Please can someone help me? Why not const unsigned char *Str1[2] = {"Hello","Bye "}; ? BAJ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

On Thursday 25 October 2001 01:06 pm, Microchip wrote: > I want to declare an array of strings like : > > const unsigned char Str1 [2][5] = {"Hello", "Bye "}; > > My problem is the compilator doesn't put the null caracter (\0) at end of > each string. That's because there are 5 characters in "Hello" and you didn't give it any room to put the NUL in . This suggestion won't work for the same reason: > Try this: > > const unsigned char Str1 [2][5] = {"Hello\0", "Bye \0"}; > > That should put an explicit NULL at the end of each string. The (const unsigned char str1[2][6]) should give you enough room as well as give you the NUL chars. But note that this will reserve space for 12 bytes; if you have a larger/sparser array than this it might make sense to have an array of char* (of course, the generated code may be somewhat slower because the PIC is bad at pointers): const unsigned char * const Str1[2] = { "Hello", "Bye" }; -- Ned Konz currently: Stanwood, WA email: EraseMEnedspam_OUTTakeThisOuTbike-nomad.com homepage: http://bike-nomad.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Hi, with str1[2][5] in main: you can access at str[0][...] or str[1], not str[2], this is out of the array. arrays begin at 0 and go to size-1. char x[10]; for(i=0; i<10; i++) { ... } ----- Mensaje original ----- De: "Dipperstein, Michael" <mdippersspam_OUTHARRIS.COM> Para: <@spam@PICLISTKILLspamMITVMA.MIT.EDU> Enviado: Jueves 25 de Octubre de 2001 6:02 PM Asunto: Re: Problem with strings with hi-tech -----8<------- {Quote hidden}> > Using PIC-C 7.87PL2, I wrote the following code: > > #include <pic.h> > > const unsigned char Str1 [2][6] = {"Hello", "Bye "}; > > void main(void) > { > int i; > > i = (Str1[2][3] == 'q'); > return; > } > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics