Push Back All Elements from a Vector to another Vector using C++

#include <bits/stdc++.h>

using namespace std;

int main() {
    vector<int> a = {1, 2, 3, 4, 5};
    vector<int> b = {6, 7, 8, 9, 10};
    a.insert(a.end(), b.begin(), b.end());
    // elements in vector 'a'
    for (auto& x : a) {
        cout << x << " ";
    }
    cout << '\n';
    b.clear();
    // elements in vector 'b'
    for (auto& x : b) {
        cout << x << " ";
    }
    cout << '\n';
    return 0;
}