Write usage() message on stderr.

This commit is contained in:
Simon Lieb 2013-08-08 21:03:11 +02:00
parent e7967698d2
commit 7ae9bb1196

2
slow.c
View file

@ -8,7 +8,7 @@
char *argv0;
void usage() {
printf("usage: %s [-t usec] [-F]\n", argv0);
fprintf(stderr, "usage: %s [-t usec] [-F]\n", argv0);
exit(EXIT_FAILURE);
}