#include <iostream>
#include <string>
#include <unistd.h>
/*
       int getopt(int argc, char *const argv[],
                  const char *optstring);
*/

using namespace std;

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

int main(int argc, char * argv[]) {
    int res;
    while ( (res = getopt(argc, argv, "aeiou")) != -1 ) {
        cout << "The result is " << static_cast<char>(res) << endl;
        cout << "The next position is " << optind << endl;
        cout << endl << endl;
    }

    return 0;

}