From:	Weiqi Gao <weiqigao AT a DOT crl DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Catenation (spelled right?) of strings
Date:	Thu, 12 Aug 1999 20:44:48 -0500
Organization:	CRL Network Services
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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:
> 
> I tried this:
> char THE_STRING [255];
> THE_STRING = "GOATS " + "MAKE " + "GOOD " + "PETS!";
> 
> My compiler (DGJPP gccw32.exe) says: "invalid operands to binary +"
> 
> How do I join those strings?

The correct thing to do is:
  char *theString = "Goats " "make " "good " "pets!";

Your code has two problems:

1.  The plus ('+') operator cannot be used on C-style strings.  The
concatenate two literal strings, you simply put them side by side.  Not
that this worked only for literal strings, and wouldn't work for
variables.

2.  char THE_STRING[255]; declares THE_STRING as an array.  Once an
array is declared, you cannot change it.  The line "THE_STRING = ..." is
seen by the compiler as an attempt to change THE_STRING, and will not
compile.  Other attempts to change THE_STRING itself like THE_STRING++
will also cause a compile time error.  The individual elements of the
array can be changed, though, e.g., THE_STRING[0] = 'G'; THE_STRING[1] =
'O'; are legal.

-- 
Weiqi Gao
weiqigao AT a DOT crl DOT com

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