Lygiagreti_Tiuringo_Masina

//Pavel Trostianko. Lygiagretusis Tiuringas.

#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>

using namespace std;

struct tiuring //kintamu ir funkciju sarasas
{
    bool check;
    int len = 0, sk, nmbr;
    char second[1000], third[1000], four[1000];
    string first[1000], five[1000], poz, tiur;

    void Reading()
    {
        string selecting;
        cout << nmbr << ".txt adress: ";

    start:
        getline (cin, selecting);
        ifstream fil(selecting.c_str());
        if(fil.fail())
        {
            cout << "File Name Error!" << endl;
            goto start;
        }
        fil >> sk;
        fil >> tiur;

        while (fil >> first[len] >> second[len] >> third[len] >> four[len] >> five[len])
        {
            len++;
        }

        fil.close();
    }

    void Showing()
    {
        cout << endl;
        cout << "File: " << nmbr << endl;
        cout << tiur << endl;
        cout << endl;

        for(int i=0;i<len;i++)
        {
            cout << first[i] << " " << second[i] << " " << third[i] << " " << four[i] << " " << five[i] << endl;
        }
    }

    void Process()
    {
        cout << "File number: " << nmbr << " ";
        if(check==true)
        {
            poz = first[0];
        }

        string er;

        for(int i=0;i<len;i++)
            if(poz == first[i])
            {
              if(second[i] == tiur[sk+1])
              {
                  tiur[sk+1]= third[i];

                  if(four[i]=='r' || four[i]=='R')
                  {
                      sk++;
                  }
                  else
                  {
                      sk--;
                  }
                  if(sk < 0)
                  {
                      sk = tiur.length();
                  }
                  if(sk > tiur.length())
                  {
                      sk=0;
                  }
                  poz = five[i];
              }
            }
            if(er != tiur) cout << tiur << endl;
            er = tiur;
    }
};

int main()
{
    bool checking = false;
    tiuring onet, twot, threet, fourt;

    onet.nmbr   = 1;
    twot.nmbr   = 2;
    threet.nmbr = 3;
    fourt.nmbr  = 4;

    // Reading our line
    onet.Reading();
    twot.Reading();
    threet.Reading();
    fourt.Reading();

    // Showing our line
    onet.Showing();
    twot.Showing();
    threet.Showing();
    fourt.Showing();

    // Checking our line
    onet.check = true;
    twot.check = true;
    threet.check = true;
    fourt.check = true;

   if(getch()=='t')
   {
       checking = true;
   }

   while(true)
   {
       onet.Process();
       onet.check = false;

       twot.Process();
       twot.check = false;

       threet.Process();
       threet.check = false;

       fourt.Process();
       fourt.check = false;

       if(checking == true)
       {
           getch();
       }
    }
    return 0;
}