#include <iostream>
#include <vector>    // vector is included
#include <cstdlib>

using namespace std;

int main()
{
    vector<int> v { // vector<int>
        10,
        20,
        30
    };

    // Adding a 4th end to the vector and a 5th
    v.push_back(40);
    v.push_back(50);

    cout << "This vector contains these set values of:\n";

    // Printing the statements
    for (size_t i = 0; i < v.size(); ++i) {
        cout << "v[" << i << "] = " << v[i] << "\n";
    }

    // The sum of elements
    int sum {0};
    for (int x : v) {
        sum += x;
    }

    cout << "Sum of elements = " << sum << "\n";

    return EXIT_SUCCESS;
}