No, you have to use the sprintf (better use snprintf) approach. "some static text"+3 just increases the address returned by the string literal by 3 bytes, which would actually pass "e static text" to your function.

Sebastian Schmidt
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-----Ursprüngliche Nachricht-----
Von: [] Im Auftrag von Lim Hock-Chai
Gesendet: Donnerstag, 12. Juni 2008 16:59
An: C programming iSeries / AS400
Betreff: Re: [C400-L] basic c question about char *

Thank you for all the reply. Now I've a better understanding of char *.

One more question:

Void myFunction(char *message)

myFunction("my static message");

// above function call is pretty straight forward. But what if I need
to pass non static message to it? Is there a way to do it without
having to create a char * or char [] variable. Something like this (I
know the syntax is not correct):

myFunction("my static message" + myInt);

Or do I have to do

char myMessage[20];
sprintf(myMessage, "my non Static message %i", myInt);

-----Original Message-----
[] On
Behalf Of Lim Hock-Chai
Sent: Wednesday, June 11, 2008 4:36 PM
To: C programming iSeries / AS400
Subject: [C400-L] basic c question about char *

can somebody help me understand how char * work?

char * s1;
s1 = "assign a value";
s1 = "assign another value"; //does c auto deallocate storage and
reallocate a longer one for this assignment?

. . .

char * s1
int myInt = 10;

sprintf(s1, "test %i", myInt); //why is s1 contains *null after this

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