Priority Queue

#include <iostream>
#include <queue>
using namespace std;
int main()
{
    priority_queue <int> i;
    i.push(110);
    i.push(202);
    i.push(303);
    i.push(40);
    do
    {
            cout<<i.top()<<endl;
            i.pop();
    }while(!i.empty());
    system("pause");
    return 0;
}

This is the output:

303
202
110
40