C++ tuple

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C++ tuple

For returning two values I use a std::pair (usually typedef’d). You should look at boost::tuple (in C++11 and newer, there’s std::tuple) for more than two return results.
With introduction of structured binding in C++ 17, returning std::tuple should probably become accepted standard.

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#include <tuple>
std::tuple<int, int> divide(int dividend, int divisor) {
    return  std::make_tuple(dividend / divisor, dividend % divisor);
}

#include <iostream>
int main() {
    using namespace std;
    int quotient, remainder;
    tie(quotient, remainder) = divide(14, 3);
    cout << quotient << ',' << remainder << endl;
}

In C++17:

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#include <tuple>
std::tuple<int, int> divide(int dividend, int divisor) {
    return  {dividend / divisor, dividend % divisor};
}

#include <iostream>
int main() {
    using namespace std;
    auto [quotient, remainder] = divide(14, 3);
    cout << quotient << ',' << remainder << endl;
}

or with structs

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auto divide(int dividend, int divisor) {
    struct result {int quotient; int remainder;};
    return result {dividend / divisor, dividend % divisor};
}

#include <iostream>
int main() {
    using namespace std;
    auto result = divide(14, 3);
    cout << result.quotient << ',' << result.remainder << endl;
    // or
    auto [quotient, remainder] = divide(14, 3);
    cout << quotient << ',' << remainder << endl;
}

Reference