learning poash temp

#if defined(_MSC_VER)
#include <__msvc_all_public_headers.hpp>
#elif defined(__GNUC__)
#include <bits/stdc++.h>
#else
#error "Unsupported compiler"
#endif
using namespace std;

template <typename T, size_t size>
T sum(T(&arr)[size]) {
    T s = 0;
    for (size_t i = 0; i < size; i++) {
        s += arr[i];
    }
    return s;
}

int main() {
    int arr[] = { 1, 2, 3, 4, 5 };
    cout << sum(arr) << endl;
    return 0;
}