#include <iostream>
#include <cstdlib>
using namespace std;   //using directive: may not be needed on your platform.

int main(int argc, char **argv)
{
	if (argc != 2) {
		cerr << argv[0];
		cerr << ": requires 1 command line argument\n";
		return EXIT_FAILURE;
	}

	cout << "I received the argument ";
	cout << argv[1];
	cout << ".\n";
	return EXIT_SUCCESS;
}