arrays

[slickn_sly]

I was wondering how you can add "\t" character in an array. For
example,

if my first input string is: my name is john
and my second input string is: i like the beach.


How would i insert the tab character, "\t", after john. and add the
second
string after the tab character?
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[Thomas Matthews]

Re: arrays

slickn_sly wrote:
[color=blue]
> I was wondering how you can add "\t" character in an array. For
> example,
>
> if my first input string is: my name is john
> and my second input string is: i like the beach.
>
>
> How would i insert the tab character, "\t", after john. and add the
> second
> string after the tab character?[/color]
Create another array which is larger than the sum of
the first string plus the second string plus the tab character.

Copy the first string into the new array, use strcpy.
Append the tab character (concatenate it), use strcat.
Concatenate the second string.

See also sprintf.

--
Thomas Matthews

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[Jason]

Re: arrays


slickn_sly wrote:[color=blue]
> I was wondering how you can add "\t" character in an array. For
> example,
>
> if my first input string is: my name is john
> and my second input string is: i like the beach.
>
>
> How would i insert the tab character, "\t", after john. and add the
> second
> string after the tab character?
> Posted at: http://www.groupsrv.com
>
> Posted Via Usenet.com Premium Usenet Newsgroup Services
> ----------------------------------------------------------
> ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
> ----------------------------------------------------------
> http://www.usenet.com[/color]

Read about strcat in <string.h> and sprintf in <stdio.h>.

[Eric Sosman]

Re: arrays



slickn_sly wrote:[color=blue]
> I was wondering how you can add "\t" character in an array. For
> example,
>
> if my first input string is: my name is john
> and my second input string is: i like the beach.
>
>
> How would i insert the tab character, "\t", after john. and add the
> second
> string after the tab character?[/color]

#include <string.h>
#define STRING1 "my name is john"
#define STRING2 "i like the beach."
....
char array[sizeof STRING1 + sizeof STRING2] = STRING1;
strcat(array, "\t");
strcat(array, STRING2);

I feel slightly guilty about posting this even though
it is (AFAIK) correct. Somebody is going to misunderstand
the way array[] is sized, and I'll be partly to blame for
the ensuing trouble.

--
Eric.Sosman@sun .com

[Christopher Benson-Manica]

Re: arrays

Eric Sosman <eric.sosman@su n.com> spoke thus:
[color=blue]
> #include <string.h>
> #define STRING1 "my name is john"
> #define STRING2 "i like the beach."
> ...
> char array[sizeof STRING1 + sizeof STRING2] = STRING1;
> strcat(array, "\t");
> strcat(array, STRING2);[/color]

It might be better to have "\t" #define'd as it's own string, since
the space needed for array is dependent on the string passed in the
first call to strcat(). I personally like

char array[sizeof STRING1 + sizeof STRING2]=STRING1;
sprintf( array+sizeof(ST RING1)-1, "%c" STRING2, '\t' );

which is either correct or an opportunity for me to learn something ;)

--
Christopher Benson-Manica | I *should* know what I'm talking about - if I
ataru(at)cybers pace.org | don't, I need to know. Flames welcome.

[Charles Mills]

Re: arrays


Christopher Benson-Manica wrote:[color=blue]
> Eric Sosman <eric.sosman@su n.com> spoke thus:
>[color=green]
> > #include <string.h>
> > #define STRING1 "my name is john"
> > #define STRING2 "i like the beach."
> > ...
> > char array[sizeof STRING1 + sizeof STRING2] = STRING1;
> > strcat(array, "\t");
> > strcat(array, STRING2);[/color]
>
> It might be better to have "\t" #define'd as it's own string, since
> the space needed for array is dependent on the string passed in the
> first call to strcat(). I personally like
>
> char array[sizeof STRING1 + sizeof STRING2]=STRING1;
> sprintf( array+sizeof(ST RING1)-1, "%c" STRING2, '\t' );
>
> which is either correct or an opportunity for me to learn something[/color]
;)[color=blue]
>[/color]
You could just say do this:

static const char str[] = STRING1 "\t" STRING2;

assuming STRING1 and STRING2 are literals, which is probably not the
case.

-Charlie

[Dave Thompson]

Re: arrays

On Thu, 31 Mar 2005 19:08:19 +0000 (UTC), Christopher Benson-Manica
<ataru@nospam.c yberspace.org> wrote:
[color=blue]
> Eric Sosman <eric.sosman@su n.com> spoke thus:
>[color=green]
> > #include <string.h>
> > #define STRING1 "my name is john"
> > #define STRING2 "i like the beach."
> > ...
> > char array[sizeof STRING1 + sizeof STRING2] = STRING1;
> > strcat(array, "\t");
> > strcat(array, STRING2);[/color]
>
> It might be better to have "\t" #define'd as it's own string, since
> the space needed for array is dependent on the string passed in the
> first call to strcat(). I personally like
>
> char array[sizeof STRING1 + sizeof STRING2]=STRING1;
> sprintf( array+sizeof(ST RING1)-1, "%c" STRING2, '\t' );
>
> which is either correct or an opportunity for me to learn something ;)[/color]

It is correct for the values given, but extremely dangerous if STRING2
is later modified (in real practice, probably by someone else) to a
value that contains a percent sign. You could avoid that by
sprintf ( /*as above*/, "%c%s", '\t', STRING2);

Of course as already noted for constants you don't need code at all.

- David.Thompson1 at worldnet.att.ne t