Stack using Queue, making Pop costly (via class and object)

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 #include <bits/stdc++.h>
using namespace std;
//making pop operation costly
class stk
{
private:
    queue<int> q1, q2;

public:
    void psh()
    {
        int x;
        cout << "Enter the value: ";
        cin >> x;
        q1.push(x);
    }
    void popp()
    {
        int x;
        if (q1.empty())
        {
            cout << "Stack already empty! \n";
            return;
        }
        while (!q1.empty() && q1.back() != q1.front())
        {
            x = q1.front();
            q2.push(x);
            q1.pop();
        }
        q1.pop();
        while (!q2.empty())
        {
            x = q2.front();
            q1.push(x);
            q2.pop();
        }
    }
    void print()
    {
        int x;
        q2 = q1;
        if (q1.empty())
        {
            cout << "Stack is empty! \n";
            return;
        }
        cout << "Bottom-> ";
        while (!q2.empty())
        {
            cout << q2.front() << " ";
            q2.pop();
        }
        cout << "<-Top\n";
    }
};
int main()
{
    int choice = 1, ch, x;
    stk s1;
    while (choice)
    {
        cout << "ENTER 1. to push in stack ";
        cout << "\nENTER 2. to pop from stack";
        cout << "\nENTER 3. to print stack.\nEnter choice: ";
        cin >> ch;
        if (ch == 1)
            s1.psh();
        else if (ch == 2)
            s1.popp();
        else if (ch == 3)
            s1.print();
        cout << "Do you want to continue (0/1) : ";
        cin >> choice;
    }
}

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