getopt_test.cpp

#include <iostream>
#include <unistd.h>

int main(int argc, char *argv[])
{
    int result;
	
	while((result = getopt(argc, argv, "ab:")) != -1) {
	    switch(result){
	    case 'a':
	    	std::cout << 'a' << std::endl;
			break;
		case 'b':
	    	std::cout << "b," << optarg << std::endl;
	    	break;
		}
	}
}