5. Print Even Numbers

#include <iostream>
#include <sstream>
#include <string>
#include <queue>

using namespace std;

int main() {
    string line;
    getline(cin, line);

    istringstream ss(line);

    queue<int> numbers;

    int number;

    while (ss >> number) {
        if (number % 2 == 0) {
            numbers.push(number);
        }
    }

    while (!numbers.empty()) {
        if (numbers.size() == 1) {
            cout << numbers.front() << endl;
        }
        else {
            cout << numbers.front() << ", ";
        }
        numbers.pop();
    }

    return 0;
}