Hi,
I have a question about about the use og va_start, va_arg, va_end, ...
I'm trying to pass a variable argument list from one function to
another, but I can't get it to work. My code looks someting like this:
int func_one(char *arg, ...) {
va_list ap;
va_start(ap, arg);
...
/* call func_two with the same arguments as func_one was called */
func_two(arg, ap);
...
va_end(ap);
}
int func_two(char *arg, ...) {
...
}
Can anybody help me with this? Is it possible at all?
/Anders.
3  4739 
On 2003-11-16, Anders Andersen <an****@meshtec hnologies.com> wrote: I'm trying to pass a variable argument list from one function to
another, but I can't get it to work. My code looks someting like this:
int func_one(char *arg, ...) {
va_list ap;
va_start(ap, arg);
...
/* call func_two with the same arguments as func_one was called */
func_two(arg, ap);
...
va_end(ap);
}
int func_two(char *arg, ...) {
...
}
Can anybody help me with this? Is it possible at all?
int func_two(char *arg, va_list ap) {
/* ... */
}
func_two does not need to use va_start/va_end.
-- James
James Hu wrote: int func_two(char *arg, va_list ap) {
/* ... */
}
func_two does not need to use va_start/va_end.
Actually, it would be an error for it to use them.
--
Hallvard
Anders Andersen wrote: Hi,
I have a question about about the use og va_start, va_arg, va_end, ...
I'm trying to pass a variable argument list from one function to
another, but I can't get it to work. My code looks someting like this:
int func_one(char *arg, ...) {
va_list ap;
va_start(ap, arg);
...
/* call func_two with the same arguments as func_one was called */
func_two(arg, ap);
...
va_end(ap);
}
int func_two(char *arg, ...) {
...
}
Can anybody help me with this? Is it possible at all?
/Anders.
Yes, but only if you declare func_two as
int func_two(char *arg, va_list ap) {
...
}
You might want to keep the other func_two (with the ...) and
have it call this func_two (with the va_list), but the real
"work" has to be done in the va_list version.
Cheers,
Gabor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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