Hi,
"Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx> writes:
> i'm clarifying the meaning and usage of the gcc attributes used in
> the kernel source tree, and i noticed that the gcc manual defines the
> "format" attribute as having four possible archetypes: printf, scanf,
> strftime or strfmon.
>
> however, it seems that there's no real difference between the
> archetypes printf and scanf:
>
> int printf(const char *format, ...);
> int scanf(const char *format, ...);
>
> so is there a reason why someone would use one over the other?
#include <stdio.h>
int main(void)
{
int n;
scanf ("%d", &n);
printf("%d\n", n);
return 0;
}
scanf expects different types for equivalent format strings.
Hannes
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