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// lab5 task3.cpp
//

#include "stdafx.h"
#include <iostream>
#include <stack>

std::stack<int> my_stack;

void function_show()
{
    std::cout << "contents of the stack:\n";
    for (std::stack<int> dump = my_stack; !dump.empty(); dump.pop())
        std::cout << dump.top() << '\n';
    std::cout << "\n";
}


void function_isEmpty()
{
    std::cout.setf(std::ios::boolalpha);
    std::cout << my_stack.empty() << "\n";
}


void function_push()
{
    int value = 0;
    std::cout << "Enter a value push: ";
    std::cin >> value;
    my_stack.push(value);
}


void function_pop()
{
    my_stack.pop();
    std::cout << "\n";
}


void function_top()
{
    if (!my_stack.empty())
    {
        std::cout << "top element: " << my_stack.top();
        std::cout << "\n";
    }
    else
    {
        std::cout << "List is empty!Action is impossible!\n";
    }
}


int menu()
{
    int value = 0;

    std::cout << "Select the menu item:\n";
    std::cout << "1.Push\n2.Pop\n3.Top\n4.Is empty\n5.Show\n6.Exit\n";
    std::cin >> value;
    switch (value)
    {
    case 1:
        system("cls");
        function_show();
        function_push();
        function_show();
        return menu();
    case 2:
        system("cls");
        if (!my_stack.empty())
        {
            function_show();
            function_pop();
            std::cout << "top element is removed.\n";
            function_show();
        }
        else
        {
            std::cout << "List is empty!Action is impossible!\n";
        }
        return menu();
    case 3:
        system("cls");
        function_top();
        return menu();
    case 4:
        function_isEmpty();
        return menu();
    case 5:
        system("cls");
        function_show();
        return menu();
    case 6:
        std::cout << "bye-bye, baby!" << (char) 01 << "\n";
        return 0;
    default:
        std::cout << "error input, retype, please:";
        return menu();
    }
}


int main()
{
    menu();
    return 0;
}