I wrote:
> (I can't immediately think of a case where I've
> needed this capability, but it's nice to know it's
> possible!)
Coincidentally I ran across this example in Kernighan &
Ritchie. It prints the program's command-line arguments
separated by spaces. The format string is chosen at runtime
as either "%s " or "%s":
#include <stdio.h>
main(int argc, char *argv[])
{
while (--argc > 0)
printf((argc > 1) ? "%s " : "%s", *++argv);
printf("\n");
return 0;
}
"This shows that the format argument of printf can be an
expression too", say K&R.
David
