Need Help with the assignment ASAP!

The following features need to be added. to program.

1. The if statements to decide when the game is won by a player having 3 squares in a row.(2 pts)
2. Do not allow a state to be chosen more than once during a game.(1 pt)
3. Do not allow a square to be chosen more than once during a game.(1 pt)
4. Make the matching of the answer to the question case insensitive. .(1 pt)

tictactoe.cpp file
____________________________________________________________________________

Code:

#include <iostream>

#include <ctype.h>

#include <ctime>

#include <fstream>

#include <string>

#include <Windows.h>

using namespace std;



// function prototypes

void loadst(string [],string []);

void play(string [],string []);

void drawsq(void);

int pickst(void);



int main()

{

    string states[50],caps[50];

    char choice='y';



    srand(time(NULL)); /* seed the random number sequence */

    loadst(states,caps); /* get input data*/

    system("cls");

    while(tolower(choice)=='y')

    {

        drawsq();

        play(states,caps);



        COORD coord = {1, 20};

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout<< "DO YOU WANT TO PLAY AGAIN? (Y/N) ";

        cin >> choice;

    }

}



/**************************** DRAW SQUARE FUNCTION */

void drawsq(void)

{

    string board[9] = {"1 |2 |3 ", 

        " | | ",

        "---+---+---",

        "4 |5 |6 ",

        " | | ",

        "---+---+---",

        "7 |8 |9 ",

        " | | " };



    int i,x,y;

    system("cls");

    y=0;

    x=40;

    for (i=0;i<9;i++)

    {

        y++;

        COORD coord = {x, y};

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout<<board[i];

    }

}



/***************************** PICK RANDOM STATE */

int pickst()

{

    return(rand()%50);

}



/**************************** LOAD STATES FUNCTION */

void loadst(string states[],string caps[] )

{

    ifstream infile;

    string temp;



    infile.open("G:\\CS1K\\usstates.dat");



    for (int i=0;i<50;i++)

    {

        getline(infile,temp);

        states[i]=temp.substr(0,14);

        caps[i]=temp.substr(39,14);

    }



    infile.close();

}



/******************************** PLAY FUNCTION*/

void play(string states[],string caps[])

{

    int gameover,iplayer,chosen, count,i,stpick;

    int boxxy[2][9] = {41,45,49,41,45,49,41,45,49,2,2,2,5,5,5,8,8,8};

    string answer,blanks=" ";

    char player[2] = {'X','O'};

    COORD coord;

    gameover = count = 0;

    while(!gameover)

    {

        coord.X=1;

        coord.Y=18;

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout << blanks;



        coord.X=1; coord.Y=14;

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        iplayer=count%2;

        cout<<"PLAYER = "<<player[iplayer];



        coord.X=1; coord.Y=16;

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout << blanks;

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout<<"WHICH BOX DO YOU CHOOSE? ";

        cin >> chosen;

        cin.ignore();

        stpick=pickst();



        coord.X=1;

        coord.Y=18;

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        cout << "THE CAPITAL OF " << states[stpick] << " IS ? ";

        getline(cin,answer);

        for (i=answer.length(); i<14; i++)

            answer.append(" ");



        //gotoxy(boxxy[0][chosen-1],boxxy[1][chosen-1]);

        coord.X=boxxy[0][chosen-1]; coord.Y= boxxy[1][chosen-1];

        SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

        if (answer==caps[stpick])

            cout<< player[iplayer];

        else

            cout<< player[1-iplayer];



        count++;

        if (count==9)

            gameover = 1;

    }

}

__________________________________________________________________

usstates.dat file

__________________________________________________________________

Code:

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