//
// example of using command-line arguments:
// program to sum its arguments, assumed to be numeric (possibly 
//   floating-point)
//
#include <iostream.h>
#include <stdlib.h>		// has atof(), EXIT_SUCCESS,
				//   EXIT_FAILURE, exit()


int main(int argc, char *argv[])
{
  if (argc <= 1)
    {
      cout << "Usage:  sumpgm value1 value2... \n";
      exit(EXIT_FAILURE);	// bail out
    }

  double sum;

  for(int i = 1; i < argc; ++i)
    sum = sum + (atof(argv[i]));

  cout << "Sum: " << sum << endl;

  return EXIT_SUCCESS;
}