On Wed, May 02, 2001 at 05:58:59PM +0100, Glen Gray wrote:
> Looking for a simple way to cat two strings into a third.
>> I had the following in my code
>> msg = strdup(strcat(strvar1, strvar2));
>> What happens here is the strvar2 is concatinated to strvar1 and a
> pointer to strvar1 is returned to strdup which allocates memeory for the
> char *message variable.
After reading Kenn's solution, I have to say I agree with him :)
Stretch it out! But if you wanted the short way, you could always
(after properly allocating space for msg) do
(msg = realloc(msg, strlen(strvar1) + strlen(strvar2) +
1))==NULL? realloc_failed_stuff(__FILE__, __LINE__): 1,
Of course, there's nothing stopping you from putting the whole
program on one line using the comma operator. As long as you
don't use if, while or for statements :)
And my first instinct...
doesn't work because you can never be sure what order the
arguments will evaluate. So strcat might cat strvar2 on the
(uninitialised) msg before strdup over-writes it with strvar1.
/ David Neary, \
| E-Mail dneary at eircom.net |
\ Phone +353-1-872-0654 /
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