Working with Data Structures: Queues

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

int main()
{
queue<double> doubleQueue;
string yesNoString;

doubleQueue.push(1.1);
doubleQueue.push(2.2);
doubleQueue.push(3.3);
doubleQueue.push(4.4);
doubleQueue.push(5.5);

doubleQueue.empty() == 1 ? yesNoString = "true" : yesNoString = "false";
cout << "EMPTY: " << yesNoString << endl;
cout << "SIZE: " << doubleQueue.size() << endl;
cout << "FRONT: " << doubleQueue.front() << endl;
cout << "BACK: " << doubleQueue.back() << endl;

doubleQueue.pop();
doubleQueue.pop();

doubleQueue.empty() == 1 ? yesNoString = "true" : yesNoString = "false";
cout << "EMPTY: " << yesNoString << endl;
cout << "SIZE: " << doubleQueue.size() << endl;
cout << "FRONT: " << doubleQueue.front() << endl;
cout << "BACK: " << doubleQueue.back() << endl;

doubleQueue.pop();
doubleQueue.pop();

doubleQueue.empty() == 1 ? yesNoString = "true" : yesNoString = "false";
cout << "EMPTY: " << yesNoString << endl;
cout << "SIZE: " << doubleQueue.size() << endl;
cout << "FRONT: " << doubleQueue.front() << endl;
cout << "BACK: " << doubleQueue.back() << endl;
}