c++17 - Get several inputs at once from an input stream.

input.cpp

#include <iostream>
#include <tuple>

template <typename... input_ts>
auto stream_get(std::istream& stream) {
    if constexpr (sizeof...(input_ts) == 1) {
        std::tuple_element_t<0, std::tuple<input_ts...>> input;
        stream >> input;
        return input;
    } else {
        return std::tuple{stream_get<input_ts>(stream)...};
    }
}

int main() {
    auto [a, b, c] = stream_get<int, int, float>(std::cin);
    std::cout << a << " " << b << " " << c << '\n';
}