#include <cstddef>
#include <iostream>
template <std::size_t N> int sum(const int (&values)[N]) { int result{}; for (int value : values) result += value; return result; }
int main() { int values[]{2, 4, 6, 8}; std::cout << "count=" << (sizeof(values) / sizeof(values[0])) << " sum=" << sum(values) << '\n'; }