cpp_helloworld

#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main() {
    cout << "Hello World!" << endl;
    string a("hello");
    string b("world");
    vector<string> str_vec;
    str_vec.push_back(a);
    str_vec.push_back(b);
    for (auto & c : str_vec)
    {
        cout << c << endl;
    }
    return 0;
}