/*
 *  TestEllipses.cpp
 */
#include <iostream>
#include <cstdarg>
using namespace std;

int sum(int, ...);

int main() {
   cout << sum(3, 1, 2, 3) << endl;       // 6
   cout << sum(5, 1, 2, 3, 4, 5) << endl; // 15

   return 0;
}

int sum(int count, ...) {
   int sum = 0;

   // Ellipses are accessed thru a va_list
   va_list lst;  // Declare a va_list
   // Use function va_start to initialize the va_list,
   // with the list name and the number of parameters.
   va_start(lst, count);
   for (int i = 0; i < count; ++i) {
      // Use function va_arg to read each parameter from va_list,
      // with the type.
      sum += va_arg(lst, int);
   }
   // Cleanup the va_list.
   va_end(lst);

   return sum;
}