#include <iostream>
#include <vector>
#include <algorithm>
#include <ranges>

// Constrained parameter
void show(std::integral auto n) {
    std::cout << "value: " << n << '\n';
}


int main() {
    std::integral auto n = 7; // constrained variable
    show(n);
    std::vector<int> v = {5, 2, 9, 1, 4};
    std::ranges::sort(v);
    std::cout << "sorted:";
    for (int x : v) std::cout << ' ' << x;
    std::cout << std::endl;
    return 0;
}