f.c

#include <stdio.h>

int main() {
        int optind = 99, optreset = 98;
#if defined __GLIBC__
        /* glibc needs to have optind set to 0 instead of the "traditional 
           value" of 1 */
		    optind = 0;
#else
        /* 1 is the value that optind should be initialized to according to
           IEEE Std 1003.1 */
		    optind = 1;
#if defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__ || defined __APPLE__ || defined __DragonFly__
        /* BSD-like libc also needs to have optreset set to 1 */
		    optreset = 1;
#endif
#endif
        printf("ind %d reset %d\n", optind, optreset);
}