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#ifndef CSTOOL_GETOPT_H
#define CSTOOL_GETOPT_H
// global
extern int opterr, /* if error message should be printed */
optind, /* index into parent argv vector */
optopt, /* character checked for validity */
optreset; /* reset getopt */
extern const char *optarg; /* argument associated with option */
int getopt (int nargc, char *const nargv[], const char *ostr);
#endif
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