From:	Moogla <ngoldber AT lan DOT tjhsst DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Catenation (spelled right?) of strings
Date:	Thu, 12 Aug 1999 21:31:16 -0400
Organization:	MindSpring Enterprises
Lines:	45
Message-ID:	<37B37463.4CB8@lan.tjhsst.edu>
References:	<37B36D0D DOT 7F00 AT lords DOT com>
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Robinson S. wrote:
> 
> Is it possible to group a bunch of strings into an array of char:
No, unfortunately not.

> 
> I tried this:
> char THE_STRING [255];
> THE_STRING = "GOATS " + "MAKE " + "GOOD " + "PETS!";
> 
> My compiler (DGJPP gccw32.exe) says: "invalid operands to binary +"
Exactly, + cannot add string constants (since addition is always the
mathmathical kind)

> 
> How do I join those strings?

1) use the C library function strcat(char *, char *)

char * THE_STRING = strcat("GOATS", "MAKE);
char * THE_STRING = strcat(THE_STRING, "GOOD");
etc...

2) Write code to do it yourself if there is a case where you feel you
could do it better than strcat used multiple times.

To actually do a strcat yourself, you need:

char * some_base_string //The string to add on to...
char * some_other_string //The string we want to concatenate

Find the first character in some_base_string that is 0
This is because C strings are "NULL terminated") example:
char * temp = some_base_string;
for(; *temp; temp++); 		

Then start copying from some_other_string to some_base_string.
Once you get the the end of some_other_string, make sure to copy
the final NULL to some_base_string so it has an end marker too.

for(char * temp2 = some_other_string; *temp2; temp++, temp2++)
   *temp = *temp2;
*temp = 0;

moogla

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