Lots of things are wrong, taking it a line at a time:
char s[1];
Strings are null terminated (char, char, char, 0). Allocating one byte
leaves only room for the terminator, none for characters.
CharPtr textOut, text1=s, text2=s;
CharPtr is a 'Char *' - ie, the _address_ of a string, not storage for the
string itself, your textOut does not allocate space for the constructed
string. Your assignment of text1 and text2 to s has no real effect, since
you reassign both in the next two lines (see below).
text1="a";
text2="b";
Each of these two lines creates a string in memory (2 bytes each, the
character and a null terminator) and sets each pointer to the address of the
allocated string.
textOut=StrCat(textIn, textTemp);
First, textIn and textTemp don't exist, second, StrCat appends src (second
argument) to dst (first argument), the return value can be ignored - BUT,
dst must be associated with enough allocated space to hold the combined
strings plus a null terminator.
Try this instead:
char mystr[40]; //Or whatever the maximum string length -1 will be
StrCopy(mystr, "a");
// mystr now contains "a",0
StrCat(mystr, "b");
// mystr now contains "ab",0
StrCat(mystr, "c");
// mystr no contains "abc",0
/*
viewed another way:
mystr[0] == 'a'
mystr[1] == 'b'
mystr[2] == 'c'
mystr[3] == 0
*/
Good Luck,
-jjf
-----Original Message-----
From: Farzin Ashraghi [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 07, 2000 3:10 PM
To: Palm Developer Forum
Subject: StrCat
Hi!
I'm having problems using StrCat. I want to obtain texOut = "ab".
Could you tell me please, what is wrong with this?
char s[1];
CharPtr textOut, text1=s, text2=s;
text1="a";
text2="b";
textOut=StrCat(textIn, textTemp);
Thank you!
Farzin
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