Need help in a function

[lethal zinc]

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[lethal loom]

Is this for parsing command line arguments?
If so you can "simply" use getopt

[lethal zinc]

man7

getopt(3)

getopt, getopt_long, getopt_long_only, optarg, optind, opterr, optopt - Parse command-line options

Synopsis

#include <unistd.h>

int getopt(int argc, char *const argv[],
           const char *optstring);

extern char *optarg;
extern int optind, opterr, optopt;

#include <getopt.h>

int getopt_long(int argc, char *const argv[],
           const char *optstring,
           const struct option *longopts, int *longindex);
int getopt_long_only(int argc, char *const argv[],

... (truncated)