彼らは同じケースなので、メッセージを分離するための良い/正しい方法を知っていません。あなたはそれを返すことがあるgetopt_long
値伝える必要があります
static struct option long_options[] = {
{"help", no_argument, 0, 0 },
{"version", no_argument, 0, 0 },
{0, 0, 0, 0 }
};
int main(int argc, char *argv[]) {
while (1) {
int this_option_optind = optind ? optind : 1;
int option_index = 0;
c = getopt_long(argc, argv, "",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 0:
printf("option %s", long_options[option_index].name);
if (optarg)
printf(" with arg %s", optarg);
printf("\n");
return 0;
case '0':
case '1':
case '2':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf("option 2 2 %c\n", c);
return 0;
case 'a':
printf("option a\n");
break;
case 'b':
printf("option b\n");
break;
case 'c':
printf("option c with value '%s'\n", optarg);
break;
case 'd':
printf("option d with value '%s'\n", optarg);
break;
case '?':
break;
default:
printf("?? getopt returned character code 0%o ??\n", c);
}
}
if (optind < argc) {
printf("non-option ARGV-elements: ");
while (optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
...