#include <iostream>
using namespace std;
int main(int argc, char *argv[]){
// comment can be writen starting with "//"
  cout <<"Input a message with a command."<<endl;
  cout << "Number of command line parameters (argc)="<< argc << endl;
  cout << "Comand line paremeter 0 (argv[0]) : "<< argv[0] << endl;
  cout << "Comand line paremeter 1 (argv[1]) : "<< argv[1] << endl;
  return 0;
}