C++ Static Vector Class

StaticVector

#include <iostream>
#include <vector>

using namespace std;

class List
{
private:
    static vector<int> Numbers;
public:
    List();
    static void AddNumber(int num);
    static void ListNumbers();
};

void List::AddNumber(int num) {
    Numbers.push_back(num);
}

List::List() {

}

vector<int> List::Numbers;

void List::ListNumbers() {
    for(auto i : Numbers) {
        cout << "Number: " << i << endl;
    }
}

int main(int argc, char const *argv[])
{
    List::AddNumber(2);
    List::AddNumber(10);
    List::AddNumber(8);
    
    
    List::ListNumbers();
    
    return 0;
}