#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
#include<process.h>
#include<fstream.h>

ifstream fin;
ofstream fout;

class bus{
    long int mon;
    long int tue;
    long int wed;
    long int thus;
    long int fri;
    long int sat;
    // we dont work on sunday.
    public:
    void insert_table();
    int dayo(char x[])
    {
        if(!strcmpi(x,"mon") )
        {   return mon;}

        else if (!strcmpi(x,"tue") )
        {   return tue;}

        else if (!strcmpi(x,"wed") )
            {   return wed;}

        else if (!strcmpi(x,"thus") )
            {   return thus;}

        else if (!strcmpi(x,"fri") )
            {   return fri;}

        else if (!strcmpi(x,"sat") )
            {   return sat;}


    }
}obj[20];

void bus::insert_table(){
    cout<<"Enter time for: m/t/w/th/f/sa/s ";
    cin>>mon>>tue>>wed>>thus>>fri>>sat;
}

class passenger: public bus{
    private:
    char from,to,day[4];                               // cities are ABCDE therefore only char not a string.
    int date,month,seatno;
    public:
    void insert_table()
    {
        cout<<"From location (A/B/C/D/E) : ";
        cin>>from;
        cout<<"To location (A/B/C/D/E) : ";
        cin>>to;
        cout<<"Date of travel : ";
        cin>>date;
        cout << "Month of travel : ";
        cin >> month;
        cout<<"Day of travel (mon/tue/wed/thus/fri/sat) : ";
        gets(day);

    }

    void book_ticket();
    int encrypt();
}po;

int passenger::encrypt(){
    int x;
    if(po.from=='A'&&po.to=='B')
        x=0;
    else if(po.from=='A'&&po.to=='C')
         (x=1);
    else if(po.from=='A'&&po.to=='D')
     (x=2);
    else if(po.from=='A'&&po.to=='E')
    (x=3);
    else if(po.from=='B'&&po.to=='A')
     (x=4);
    else if(po.from=='B'&&po.to=='C')
     (x=5);
    else if(po.from=='B'&&po.to=='D')
     (x=6);
    else if(po.from=='B'&&po.to=='E')
     (x=7);
    else if(po.from=='C'&&po.to=='A')
         (x=8);
    else if(po.from=='C'&&po.to=='B')
         (x=9);
    else if(po.from=='C'&&po.to=='D')
         (x=10);
    else if(po.from=='C'&&po.to=='E')
         (x=11);
    else if(po.from=='D'&&po.to=='A')
     (x=12);
    else if(po.from=='D'&&po.to=='B')
         (x=13);
    else if(po.from=='D'&&po.to=='C')
     (x=14);
    else if(po.from=='D'&&po.to=='E')
     (x=15);
    else if(po.from=='E'&&po.to=='A')
(x=16);
    else if(po.from=='E'&&po.to=='B')
 (x=17);
    else if(po.from=='E'&&po.to=='C')
         (x=18);
    else if(po.from=='E'&&po.to=='D')
     (x=19);

return x;
}

void passenger::book_ticket(){
    char xom[3];
    ifstream fin;
fin.open("schedule.dat",ios::binary);
    char ch='y',ch1;int obj_no;

     while(ch=='y')
     {
         po.insert_table();
         obj_no=po.encrypt();
     fin.read((char*)&obj[obj_no] , sizeof(obj[obj_no]));
    strcpy(xom,(po.day));
    if(obj[obj_no].dayo(xom)==0 )
         cout<<"No buses available, transaction failed.\n";



     else
     {cout<<"Bus departure timing : "<<obj[obj_no].dayo( po.day)<<endl;
     cout<<"Press 'y' to book another ticket : ";
      cin>>ch1;
          if(ch1=='y')
        cout<<"Ticket booked successfully!!\n";

     }

     cout<<"Press 'y' to book another ticket : ";
     cin>>ch;
     clrscr();
     }
}

int strcomp(char c[], char s[]){
    int size = strlen(c) + 1;
    for(int i = 0; i < size; i++){
        if(c[i] != s[i]){
            return -1;
        }
    }

    return 0;
}

class Money{
  public:
  long int cardno, phone, acct;
  char bank[30],name[30], emailId[30], password[20];
  float amt,withdraw;

  Money()
  { cardno=phone=acct=0;
    amt=withdraw=0.0;
    strcpy(bank,strcpy(name,strcpy(emailId,strcpy(password, "NOT INITIALISED"))));
  }
  void Newacct();
  void pay(float);
  void add(float);
  void transfer(float);

}M;

void Money:: pay(float bill){
if(bill>amt)
    { cout<<"Bill exceeds your current balance!!!";
       getch();
      exit(-1);
    }                                                           //Bill payment...call wherever you are making payments
  amt=-bill;
  cout<<"****Transaction complete****";

}

 void Money:: transfer(float cash){
 int flag=0;
     long mobno;
     cout<<"Enter the mobile no: ";
     cin>>mobno;                                                //Transfering money to a particular phone no.
     fin.open("FILE.dat", ios::in| ios::binary);
     while(!fin.eof())
     { fin.read((char*)&M, sizeof(M));
       if(mobno==M.phone)
         { amt-= cash;
           flag=1;
         }
     }
     fin.close();
     if(flag == 1)
     { cout<<"Money Transfer complete";
     }
     else
     { cout<<"\nPhone no. didn't match the saved data.";
     }

}

void Money:: add(float cash){
char mode[15];
    cout<<"Enter your mode of payment: \tCredit card\tDebit card\tNet banking\n";
    gets(mode);
    if(!strcmpi(mode,"Debit card"))
    {  cout<<"Enter your debit card no.: ";
       cin>>cardno;
       amt+=cash;
    }                                                       //Adding money to the wallet
    if(!strcmpi(mode,"Net banking"))
    {   cout<<"Enter the bank: ";
        gets(bank);
        cout<<"Account no: ";
        cin>>acct;
        amt+=cash;
    }
    if(!strcmpi(mode,"Credit card"))
    {   cout<<"Enter your Credit card no.: ";
        cin>>cardno;
        amt+=cash;
    }
  }

class mobile{
  long int mobno ;
  char Opratr[15];
  float amount;
  public:
  void Getinfo()                        /*For both postpaid & prepaid */
  { cout<<"Enter the mobile no.: ";
    cin>>mobno;
    cout<<"Enter the operator: ";
    gets(Opratr);
    cout<<"Enter the amount: ";
    cin>>amount;
    M.pay(amount);

  }
};

class Electric{
  char state[15], board[25], city[15];
  long int consumer_no;
  float bill;
  public:
  void Enter()
  { cout<<"Enter the following details: ";
    cout<<"\nState: ";
    gets(state);
    cout<<"\nCity: ";
    gets(city);
    cout<<"Electricity Board: ";
    gets(board);
    cout<<"consumer no: ";
    cin>>consumer_no;
    cout<<"Bill: ";
    cin>>bill;
    M.pay(bill);
  }
};

void Money::Newacct(){
    char code[20],ch;
    redo:
    cout<<"Enter the following details: ";
    cout <<"Enter phone number : ";
    cin >> phone;
    cout << "Enter account number : ";
    cin >> acct;
    cout << "Enter card number : ";
    cin >> cardno;
    cout<<"Name: ";
    gets(name);
    cout<<"\nEmail Id: ";
    gets(emailId);
    cout<<"\nPassword: ";
    gets(password);
    cout<<"\nConfirm password: ";
    gets(code);

    if(strcomp(code,password))
    { cout<<"Incorrect";
      goto redo;
    }

  }

void menu(){
  float deposit;
  char ch = 'y',opt;
  fout.open("FILE.dat", ios::app|ios::binary);

  do
  {
      cout<<"\n\n\t\tBill Payment                 - a\n";
      cout<<"\t\tDeposit                      - b\n";
      cout<<"\t\tTransfer money               - c\n";
      cout<<"\t\tCreate new account           - d\n";
      cout<<"\n\t\tEnter your choice: ";
      cin>>opt;
      clrscr();
      switch(opt)
      { case 'a': { cout<<"Enter the amount: ";
                    cin>>deposit;
                    M.pay(deposit);
                    fout.write((char*)&M,sizeof(M));

                  }
        case 'b': { cout<<"Enter the amount: ";
                    cin>>deposit;
                    M.add(deposit);
                    fout.write((char*)&M,sizeof(M));
                    break;
                  }
        case 'c': { cout<<"Enter the amt to be transferred: ";
                    cin>>deposit;
                    M.transfer(deposit);
                    fout.write((char*)&M,sizeof(M));
                    break;
                  }
        case 'd': { M.Newacct();
                    fout.write((char*)&M,sizeof(M));
                    break;
                  }
        default: { cout<<"Invalid choice..!!";
                 }

      }
    cout<<"\nGo back to menu: ";
    cin>>ch;
    clrscr();
  }while(ch=='y'||ch=='Y');

  fout.close();
}

class hotel{
    int room_no;
    char name[30];
    char address[50];
    char phone[10];

    public:
    void main_menu();    //to dispay the main menu
    void add();        //to book a room
    void display();    //to display the customer record
    void rooms();    //to display alloted rooms
    void edit();    //to edit the customer record
    int check(int);    //to check room status
    void modify(int);    //to modify the record
    void delete_rec(int);    //to delete the record
}h;

void hotel::main_menu(){
    int choice;

    while(choice!=5)
    {
        clrscr();
        cout<<"\n\t\t\t\t*************";
        cout<<"\n\t\t\t\t* MAIN MENU *";
        cout<<"\n\t\t\t\t*************";
        cout<<"\n\n\n\t\t\t1.Book A Room";
        cout<<"\n\t\t\t2.Customer Record";
        cout<<"\n\t\t\t3.Rooms Allotted";
        cout<<"\n\t\t\t4.Edit Record";
        cout<<"\n\t\t\t5.Exit";
        cout<<"\n\n\t\t\tEnter Your Choice: ";
        cin>>choice;

        switch(choice)
        {
            case 1: add();
                    break;
            case 2: display();
                    break;
            case 3: rooms();
                    break;
            case 4: edit();
                    break;
            case 5: break;
            default:
                    {
                        cout<<"\n\n\t\t\tWrong choice!!!";
                        cout<<"\n\t\t\tPress any key to continue!!";
                        getch();
                    }
        }
    }
}

void hotel::add(){
    clrscr();
    int r,flag;
    ofstream fout("Record.dat",ios::app);

    cout<<"\n Enter Customer Detalis";
    cout<<"\n **********************";
    cout<<"\n\n Room no: ";
    cin>>r;
    flag=check(r);

    if(flag)
        cout<<"\n Sorry..!!!Room is already booked";
    else
    {
        room_no=r;
        cout<<" Name: ";
        gets(name);
        cout<<" Address: ";
        gets(address);
        cout<<" Phone No: ";
        gets(phone);
        fout.write((char*)this,sizeof(hotel));
        cout<<"\n Room is booked!!!";
    }

    cout<<"\n Press any key to continue!!";
    getch();
    fout.close();
}

void hotel::display(){
    clrscr();
    ifstream fin("Record.dat",ios::in);
    int r,flag;
    cout<<"\n Enter room no: ";
    cin>>r;

    while(!fin.eof())
    {
        fin.read((char*)this,sizeof(hotel));
        if(room_no==r)
        {
            clrscr();
            cout<<"\n Cusromer Details";
            cout<<"\n ****************";
            cout<<"\n\n Room no: "<<room_no;
            cout<<"\n Name: "<<name;
            cout<<"\n Address: "<<address;
            cout<<"\n Phone no: "<<phone;
            flag=1;
            break;
        }
    }

    if(flag==0)
        cout<<"\n Sorry Room no. not found or vacant!!";

    cout<<"\n\n Press any key to continue!!";
    getch();
    fin.close();
}

void hotel::rooms(){
    clrscr();
    ifstream fin("Record.dat",ios::in);
    cout<<"\n\t\t\tList Of Rooms Allotted";
    cout<<"\n\t\t\t*********************";
    cout<<"\n\n Room No.\tName\t\tAddress\t\tPhone No.\n";

    while(!fin.eof())
    {
        fin.read((char*)this,sizeof(hotel));
        cout<<"\n\n "<<room_no<<"\t\t"<<name;
        cout<<"\t\t"<<address<<"\t\t"<<phone;
    }

    cout<<"\n\n\n\t\t\tPress any key to continue!!";
    getch();
    fin.close();
}

void hotel::edit(){
    clrscr();
    int choice,r;

    cout<<"\n EDIT MENU";
    cout<<"\n *********";
    cout<<"\n\n 1.Modify Customer Record";
    cout<<"\n 2.Delete Customer Record";

    cout<<"\n Enter your choice: ";
    cin>>choice;

    clrscr();
    cout<<"\n Enter room no: ";
    cin>>r;

    switch(choice)

    {
        case 1: modify(r);

                break;

        case 2: delete_rec(r);

                break;

        default: cout<<"\n Wrong Choice!!";

    }

    cout<<"\n Press any key to continue!!!";
    getch();
}

int hotel::check(int r){
    int flag=0;
    ifstream fin("Record.dat",ios::in);
    while(!fin.eof())
    {
        fin.read((char*)this,sizeof(hotel));
        if(room_no==r)
        {
            flag=1;
                break;
        }
    }

    fin.close();
    return(flag);
}

void hotel::modify(int r){
    long pos,flag=0;
    fstream file("Record.dat",ios::in|ios::out|ios::binary);

    while(!file.eof())

    {
        pos=file.tellg();
        file.read((char*)this,sizeof(hotel));
        if(room_no==r)
        {
            cout<<"\n Enter New Details";
            cout<<"\n *****************";
            cout<<"\n Name: ";
            gets(name);
            cout<<" Address: ";
            gets(address);
            cout<<" Phone no: ";
            gets(phone);

            file.seekg(pos);
            file.write((char*)this,sizeof(hotel));
            cout<<"\n Record is modified!!";
            flag=1;
            break;
        }
    }

    if(flag==0)
        cout<<"\n Sorry Room no. not found or vacant!!";

    file.close();
}

void hotel::delete_rec(int r){
    int flag=0;
    char ch;
    ifstream fin("Record.dat",ios::in);
    ofstream fout("temp.dat",ios::out);

    while(!fin.eof())
    {
        fin.read((char*)this,sizeof(hotel));
        if(room_no==r)
        {
            cout<<"\n Name: "<<name;
            cout<<"\n Address: "<<address;
            cout<<"\n Pone No: "<<phone;
            cout<<"\n\n Do you want to delete this record(y/n): ";
            cin>>ch;

            if(ch=='n')
            fout.write((char*)this,sizeof(hotel));

            flag=1;
        }
        else
            fout.write((char*)this,sizeof(hotel));
    }

    fin.close();
    fout.close();

    if(flag==0)
        cout<<"\n Sorry room no. not found or vacant!!";
    else
    {
        remove("Record.dat");
        rename("temp.dat","Record.dat");
    }
}

class Menu {
    public:
        int numItems;
        char name[50];
        int selectedItem;
        int space;
        int x;
        int y;
        int width;
        int height;
        void printBorder() const ;

        Menu(int _numItems, char _name[50], int _selectedItem, int _space, int _x, int _y, int _width, int _height){
            numItems = _numItems;
            strcpy(name, _name);
            selectedItem = _selectedItem;
            space = _space;
            x = _x;
            y = _y;
            width = _width;
            height = _height;
        }

        Menu(){}
        void highlightNext();
        void highlightPrev();
};

void Menu::highlightNext(){
    selectedItem = (selectedItem >= numItems) ?  1 : selectedItem + 1;

}

void Menu::highlightPrev(){
    selectedItem = (selectedItem <= 1) ?  numItems : selectedItem - 1;
}

void spaces(int n){
    for(int i = 0; i < n; i++){
        cout << " ";
    }
}

int strcomp(char c[], char s[], int size){
    for(int i = 0; i < size; i++){
        if(c[i] != s[i]){
            return -1;
        }
    }

    return 0;
}

/*struct Node{
    char element[30];
    Node* next;
    Node(){next = NULL; strcpy(element, " ");}
};

class Stack{
    private:
        int length;
        Node* top;
    public:
        Stack(){top = new Node; length = 0;}
        char[30] getElement(int n);
        void push(char c[30]);
        void pop();
};

void Stack::push(char c[30]){
    Node* newnode = new Node;
    strcpy(newnode->element, c);
    newnode->next = top;
    length++;
}
*/

/*void Menu::printBorder() const {
    textcolor(8);

    for(int i = x; i <= x + width; i++){
        gotoxy(i, y);
        cprintf("#");
        gotoxy(i,y + height);
        cprintf("#");
    }


    for(int j = y; j <= y + height; j++){
        gotoxy(x, j);
        cprintf("#");
        gotoxy(width + x, j);
        cprintf("#");
    }
}*/

class MainMenu : public Menu {
    private:
        char mainItems[5][30];
        void initMainItems(char c[5][30], int size);
    public:
        MainMenu() : Menu(0, " ", 0, 0, 0, 0, 0, 0) {}
        MainMenu(char c[5][30] ,int size) : Menu(size, "Main", 1, 1, 20, 3, 40, 20){initMainItems(c, size);}

        void printMainMenu() const;
        void interact();
};

void MainMenu::initMainItems(char c[5][30], int size){
    for(int i = 0; i < size; i++){
        strcpy(mainItems[i], c[i]);
    }

}

void MainMenu::printMainMenu() const {
    for(int i = 0;i < numItems; i++){
        gotoxy(x + 15, 2*(i + space) + y + 3 );

        if( (i + 1) == selectedItem){
            textcolor(0xA);
        }else{
            textcolor(7);
        }
        cprintf(mainItems[i]);
    }

}

class Credentials {
    public:
        char username[8];
        char password[8];
};

class SignUpMenu : public Menu {
    private :
        Credentials curCredential;
        int usernameFlag;
        int passwordFlag;
    public :
        SignUpMenu() : Menu(5, "SignUpMenu", 1, 2, 20, 3, 40, 20), usernameFlag(0), passwordFlag(0) {}

        void printSignUpMenu() const;
        void interact();
};

class  MENUS {
    public :
        static const int SIGNUP;
        static const int  MAIN;
        static int CURRENT;
        static int MENUCHANGE;
        static void printCurMenu(MainMenu& m, SignUpMenu &s);
        static void highlightNext(MainMenu& m, SignUpMenu &s);
        static void highlightPrev(MainMenu& m, SignUpMenu &s);
        static void interact(MainMenu& m, SignUpMenu &s);
};

const int MENUS::SIGNUP = 0;
const int MENUS::MAIN = 1;
int MENUS::CURRENT = 0;
int MENUS::MENUCHANGE = 0;

void MainMenu::interact(){
    if(selectedItem == 1){
        h.main_menu();
        getch();
    }else if(selectedItem == 2){
        clrscr();
        menu();
    }else if(selectedItem == 3){
        clrscr();
        po.book_ticket();
    }else if(selectedItem == 4){
        exit(-1);
    }
}

void SignUpMenu::interact(){
    int offset = 5;

    if(selectedItem == 1){
        if(usernameFlag) for(int i = 0; i < 8; i++) {
            curCredential.username[i] = ' ';
            gotoxy(x + 12 + 11 + i, space + y + offset );
            cout << curCredential.username[i];
        }

        int numChar = 0;
        while(numChar < 8 && numChar >= 0){
            char c = getch();
            if(!isalnum(c)){
                if(c == 13) break;
                numChar--;
                continue;
            }

            curCredential.username[numChar] = c;
            gotoxy(x + 12 + 11 + numChar, space + y + offset );
            cout << curCredential.username[numChar];
            numChar++;
        }

        usernameFlag = 1;
    }else if (selectedItem == 2){
        if(passwordFlag) for(int i = 0; i < 8; i++) {
            curCredential.password[i] = ' ';
            gotoxy(x + 12 + 11 + i, 2 + space + y + offset );
            cout << curCredential.password[i];
        }

        int numChar = 0;
        while(numChar < 8 && numChar >= 0){
            char c = getch();
            if(!isalnum(c)){
                if(c == 13) break;
                numChar--;
                continue;
            }
            curCredential.password[numChar] = c;
            gotoxy(x + 12 + 11 + numChar,2 + space + y + offset );
            cout << "*";
            numChar++;
        }

        passwordFlag = 1;
    }else if (selectedItem == 3){
        exit(0);
    }else if(selectedItem == 4){
        Credentials c;
        int flag = 0;
        ifstream fin("Database.dat", ios::binary | ios::in);

        if(fin == NULL){
            gotoxy(x + 12, space + y + offset + 9 );
            cout << "Database not found.";
            getch();
            exit(0);
        }

        while( fin.read((char*)& c, sizeof(c)) ){
            if( (!strcomp(c.username, curCredential.username, 8)) ){
                gotoxy(x + 12, space + y + offset + 9 );
                cout << "Invalid username.";
                getch();
                gotoxy(x + 12 , space + y + offset + 9 );
                spaces(25);
                flag = 1;
            }
        }

        fin.close();

        if(!flag){
            ofstream fout("Database.dat", ios::binary | ios::app);
            if(fout != NULL){
                fout.write((char*)& curCredential, sizeof(curCredential));
                gotoxy(x + 12, space + y + offset + 9 );
                cout << "Account created.";
                getch();
                gotoxy(x + 12, space + y + offset + 9 );
                spaces(16);
            }
            fout.close();
        }

    }else if(selectedItem == 5){
        Credentials c;
        int flag = 0;
        ifstream fin("Database.dat", ios::binary | ios::in);

        if(fin == NULL){
            gotoxy(x + 12, space + y + offset + 9 );
            cout << "Database not found.";
            getch();
            exit(0);
        }

        while( fin.read((char*)& c, sizeof(c)) ){
            if( (!strcomp(c.username, curCredential.username, 8)) &&
                (!strcomp(c.password, curCredential.password, 8)) ){
                gotoxy(x + 12, space + y + offset + 9 );
                MENUS::CURRENT = MENUS::MAIN;
                MENUS::MENUCHANGE = 1;
                flag = 1;
            }
        }

        if(!flag){
            gotoxy(x + 12, space + y + offset + 9 );
            cout << "Account not found.";
            getch();
            gotoxy(x + 12 , space + y + offset + 9 );
            spaces(25);
        }

    }
}

void SignUpMenu::printSignUpMenu() const {
    int offset = 5;

    if(selectedItem == 1){textcolor(0xA);}else{textcolor(7);}
    gotoxy(x + 12, space + y + offset );
    cprintf("Username : ");

    if(selectedItem == 2){textcolor(0xA);}else{textcolor(7);}
    gotoxy(x + 12, 2 + space + y + offset );
    cprintf("Password : ");

    if(selectedItem == 3){textcolor(0xA);}else{textcolor(7);}
    gotoxy(x + 8, 7 + space + y + offset );
    cprintf("Exit");

    if(selectedItem == 4){textcolor(0xA);}else{textcolor(7);}
    gotoxy(x + 16, 7 + space + y + offset );
    cprintf("Sign Up");

    if(selectedItem == 5){textcolor(0xA);}else{textcolor(7);}
    gotoxy(x + 27, 7 + space + y + offset );
    cprintf("Login");

}

void MENUS::printCurMenu(MainMenu& m, SignUpMenu &s) {
    if(MENUS::MENUCHANGE) clrscr();

    switch(MENUS::CURRENT){
        case MENUS::SIGNUP:
            s.printSignUpMenu();
            break;
        case MENUS::MAIN:
            m.printMainMenu();
            break;
    }
}

void MENUS::highlightNext(MainMenu& m, SignUpMenu &s) {
    switch(MENUS::CURRENT){
        case MENUS::SIGNUP:
            s.highlightNext();
            break;
        case MENUS::MAIN:
            m.highlightNext();
            break;
    }
}

void MENUS::highlightPrev(MainMenu& m, SignUpMenu &s) {
    switch(MENUS::CURRENT){
        case MENUS::SIGNUP:
            s.highlightPrev();
            break;
        case MENUS::MAIN:
            m.highlightPrev();
            break;
    }

}

void MENUS::interact(MainMenu& m, SignUpMenu &s) {
    switch(MENUS::CURRENT){
        case MENUS::SIGNUP:
            s.interact();
            break;
        case MENUS::MAIN:
            m.interact();
            break;
    }
}

void mainProgram(){
    char mainMenuItems[4][30] = {"Hotel booking", "Money transactions", "Bus booking", "Exit"};

    MainMenu m(mainMenuItems, 4);
    //mainM.printMainMenu();
    SignUpMenu s;
    MENUS::printCurMenu(m, s);

    int flag = 1;
    while(flag == 1){
        switch(getch()){
            case 'w':
                MENUS::highlightPrev(m, s);
                break;
            case 's':
                MENUS::highlightNext(m, s);
                break;
            case 13:
                MENUS::interact(m, s);
                break;
        }
        MENUS::printCurMenu(m, s);
    }
}

void main(){
    mainProgram();
    getch();
}