how to concatenate two vectors in c++

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vector1 = {1, 2, 3};
    std::vector<int> vector2 = {4, 5, 6};

    // Concatenate vectors
    vector1.insert(vector1.end(), vector2.begin(), vector2.end());

    // Display concatenated vector
    std::cout << "Concatenated Vector: ";
    for (const auto &element : vector1) {
        std::cout << element << " ";
    }

    return 0;
}