// example from https://en.cppreference.com/w/cpp/container/vector/resize
//
#include <iostream>
#include <vector>

// added this and removed std:: throughout, RP:
//
using namespace std;

int main()
{
    vector<int> c = {1, 2, 3};
    cout << "The vector holds: ";
    for(auto& el: c) cout << el << ' ';
    cout << '\n';
    c.resize(5);
    cout << "After resize up to 5: ";
    for(auto& el: c) cout << el << ' ';
    cout << '\n';
    c.resize(2);
    cout << "After resize down to 2: ";
    for(auto& el: c) cout << el << ' ';
    cout << '\n';
}