// Sums up all (long) integer values supplied on the command-line
// Copyleft: Sathiamoorthy Manoharan.

#include <iostream>
#include <cstdlib>

int
main(int argc, char* argv[])
{
   long sum = 0;
   for ( int i = 1; i < argc; ++i )
   {
      long a = ::atol(argv[i]); // atol converts a string to long
      sum += a; // same as 'sum = sum + a'
   }
   std::cout << "sum: " << sum << "\n";

   return 0;
}