2ND_Algoritmai

//ISf-17/1, Pavel Trostianko. Stack controller (1.0).

#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <cstdlib>

using namespace std;

int amount, stck[1000], add_a, rem_a, exmpl; //how many items are in the stack
bool menu_check = 0;
string pasirinkitefaila; //for ifstream to work with our text files

void File() //enter the name of our file
{
    //We specify the path to our text file
    cout << "Please specify the path to text file with your stack.\n";
    cout << "Text: ";
    getline (cin, pasirinkitefaila);
    ifstream fin(pasirinkitefaila.c_str());
}

void Checking() //Through this function, we check whether the file is empty
{
    Sleep(1000);
    int length = 0, a; //variable for writing length of file
    cout << "\nChecking...\n\n";
    ifstream fin(pasirinkitefaila.c_str()); //read the text file of the stack

    fin.open(pasirinkitefaila.c_str(), ios::binary); //open file to read it
    fin.seekg(0, ios::end);
    length = fin.tellg(); //Characters number
    Sleep(3000);
    if(length == 0) //if empty
    {
        cout<<"Error! File is empty!\n"; //error
        File();
    }
    else //if not
    {
        cout<<"File exist!\n";
    }
    fin.close();
}

void StackScan()
{
    ifstream fin(pasirinkitefaila.c_str());
    Sleep(1500);
    cout << "\nReading our stack...\n\n";
    Sleep(3000);
    fin >> amount;
    for(int i=0;i<amount;i++)
    {
        fin >> stck[i];
    }
}

void StackShow()
{
    cout << "\n\t\tOur stack right now:\n\n";
    for(int z=0;z<amount;z++)
    {
        if(z==0)
        {
            cout << "Number of elements in our stack: " << stck[z] << endl;
            cout << "Our stack elements : " << endl;
        }
        else
        {
            cout << stck[z] << " ";
        }

    }
    cout << "\n";
}

void AddItems()
{
    Sleep(1500);
    cout << "\nAdding elements to stack\n\n";
    Sleep(1500);
    cout << "How many elements yo want to add? : ";
    cin >> add_a;
    Sleep(1500);

    cout << "\nnow you can add your elements:\n";
    for(int q=0;q<add_a;q++)
    {
        cin >> stck[amount+q];
    }
    amount += add_a;
    Sleep(2000);
    StackShow();
}

void RemoveItems()
{
    Sleep(1500);
    cout << "\nRemoving elements from stack\n\n";
    Sleep(1500);
    cout << "How many elements yo want to remove? : ";
    cin >> rem_a;

    Sleep(1000);
    cout << "\nRemoving elements...\n";
    Sleep(3000);

    for(int l=0;l<rem_a;l++)
    {
        stck[amount+l] = 0;
    }

    amount -= rem_a;
    Sleep(2000);
    StackShow();
}

void Menu()
{
    Sleep(4000);
    int x;
    if(menu_check == 0)
    {
        cout << "\n\t\tWelcome! This is controller Menu!\n\n";
        menu_check = 1;
    }
    else
    {
        cout << "\n\t\tWelcome back to the menu!\n\n";
    }
    Sleep(1000);
    cout<<"\nPress 0 to add items, press 1 to remove items: ";
    cin >> x;
    if(x == 0)
    {
        AddItems();
    }
    else
    {
        RemoveItems();
    }
}

int main()
{
    Sleep(3000);
    cout << "\n\t\tWelcome to Stack controller (1.0)!\n\n";
    Sleep(3000);
    //enter the name of our file
    File();
    //We check if the stack is empty, through the function Checking
    Checking();
    //Our stack and work with it
    StackScan();
    StackShow(); //Showing our stack first time
    //Menu for managing our program
    Menu();
    Menu();
    Menu();
    return 0;
}