.c

#include <bits/stdc++.h>

int main() {
    std::vector<std::unique_ptr<int>> numbers;
    std::unique_ptr<int> ptr1(new int(20));
    std::unique_ptr<int> ptr2(new int(10));
    numbers.push_back(ptr1);
    numbers.push_back(ptr2);
    
    for (const auto& ptr : numbers) 
            std::cout << *ptr << " ";
            
    return 0;
}