#include <vector>

auto main() -> int
{
    // Always use auto on the left for this course, but you may see this elsewhere.
    std::vector<int> v11; // Calls 0-argument constructor. Creates empty vector.

    // There's no difference between these:
    // T variable = T{arg1, arg2, ...}
    // T variable{arg1, arg2, ...}
    auto v12 = std::vector<int> {}; // No different to first
    auto v13 = std::vector<int>(); // No different to the first

    {
        auto v2 = std::vector<int> { v11.begin(), v11.end() }; // A copy of v11.
        auto v3 = std::vector<int> { v2 }; // A copy of v2.
    } // v2 and v3 destructors are called here

    auto v41 = std::vector<int> { 5, 2 }; // Initialiser-list constructor {5, 2}
    auto v42 = std::vector<int>(5, 2); // Count + value constructor (5 * 2 => {2, 2, 2, 2, 2})
} // v11, v12, v13, v41, v42 destructors called here