C++

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TicTacToe_error

maya4ap (2)
Hello! Our assignment is to write a TicTacToe game and determine if there is a win. Our proffessor suggested that we split up the "check for win" function into 1)check for diagnol win 2)check for row win 3)check for column win. I tried to see if just one function(the row win) would work but it didn't. <b>It just loops indefinitely.</b> Help please

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#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

const int rows=3;
const int col=3;


class TicTacToe
{
private:
	char board[3][3];

public:

	TicTacToe();
	bool rowwin() const;
	bool colwin() const;
	bool diagwin() const;
	void update(int row, int col);
	void  compUpdate(int row, int col);
	void  userUpdate(int row, int col);
	void print() const;
	bool win() const;

};

TicTacToe:: TicTacToe() //initializes every spot to empty
{
	for(int i=0; i<rows;i++)
		for(int j=0; j<col; j++)
			board[i][j]='*';
}


void TicTacToe:: compUpdate(int row, int col)//if space is not taken
{
	row=rand()%3;
	col = rand()%3;

	if (board[row][col] != 'x' && board[row][col]!='o' )
		board[row][col]='o';
    else
        cout <<"invalid move" <<endl;
}

void TicTacToe:: userUpdate(int row, int col)
{
	cin >> row;
	cin >> col;

	if (board[row][col] != 'x' && board[row][col]!='o' )
		board[row][col]='x';
    else
        cout <<"invalid move" <<endl;


}

void TicTacToe:: print()const
{
	for(int i=0; i<rows;i++)
		{
			for(int j=0; j<col; j++)
			{
				cout << board[i][j];

			}
			cout <<endl;
		}
		cout <<endl;

}

bool TicTacToe:: rowwin() const
	{
		for(int i=0; i<rows;i++)
			for(int j=0; j<col; j++)
				if(board[0][j]==board[0][j]==board[0][j] || board[1][j]==board[1][j]==board[1][j] || board[2][j]==board[2][j]==board[2][j])//finish!?
		return true;
	}

bool TicTacToe:: colwin() const
	{
		for(int i=0; i<rows;i++)
			for(int j=0; j<col; j++)
				if(board[i][0]==board[i][0]==board[i][0] || board[i][1]==board[i][1]==board[i][1] || board[i][2]==board[i][2]==board[i][2] )//finish!?

		return true;
	}
bool TicTacToe:: diagwin() const
	{
		for(int i=0; i<rows;i++)
			for(int j=0; j<col; j++)
				if(board[0][0]==board[1][1]==board[2][2] || board[0][2]==board[1][1]==board[2][0])//finish!?
		return true;
	}

bool  TicTacToe:: win()const
{
	if(rowwin()==true || colwin()==true || diagwin()==true)
	return true;}







int main() {
	cout << "";
	TicTacToe obj;
	int row,col;

while(obj.rowwin()==false)
{
	//cout <<"hi";
	obj.print();
	obj.userUpdate(row,col);
	obj.print();
	obj.compUpdate(row,col);


}
return 0;
}
jonnin (11441)
Probably
while(obj.rowwin()==false)
is true, making it loop forever.

Try calling the function only once, for a single board position, and see if the answer is correct. Try a few wins and losses to see if it works for various cases.


eec (26)
This is my Tic Tac Toe may be helpful

http://www.cplusplus.com/forum/general/212686/
maya4ap (2)
@ jonnin
do you mean turning the while into an if statement? because it would take a few loops to generate a win so I don't know if that would work
jonnin (11441)
just to test it, yes. Otherwise its harder to see what is happening./
andy1cplusplus (4)
I made TIC TAC TOE in C. Maybe this helps you. Some parts are in German, I hope that's no problem. I used CodeBlocks. I know there are comments(I am sorry) but I just finished with the program ;-)
You'll Need the function short search_gewinner(int array[4][4]) second Part, line 128

That's the first part: 
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdbool.h>

void init_raster(int array[4][4]){
    short i,j;

    for (i=0; i<3; i++)
    {
        for (j=0; j<3; j++)
        {
            array[i][j] = 0;
        }
    }
}

void raster (int array[4][4]){
    system("cls");
    short zaehler = 0;
    short spalte=0, zeilen=0, zeile = 0;

    zaehler = 0;

    for (spalte=0; spalte<3; spalte++)
    {
        printf("-------------------------\n");

        for (zeilen=0; zeilen<7; zeilen++)
        {
            if(zeilen == 3){
                zaehler++;
            }

            printf("|");
            if (array[spalte][zeile] == 1)
            {
                feldnullsetzen(zeilen);
            }

            else if (array[spalte][zeile] == 2)
            {
                feldxsetzen(zeilen);
            }

            else
            {
                feldleer(zeilen,zaehler);
            }

            if(zeilen == 3){
                zaehler++;
            }

            printf("|");
            if (array[spalte][zeile+1] == 1)
            {
                feldnullsetzen(zeilen);
            }

            else if (array[spalte][zeile+1] == 2)
            {
                feldxsetzen(zeilen);
            }

            else
            {
                feldleer(zeilen,zaehler);
            }

            if(zeilen == 3){
                zaehler++;
            }

            printf("|");
            if (array[spalte][zeile+2] == 1)
            {
                feldnullsetzen(zeilen);
            }

            else if (array[spalte][zeile+2] == 2)
            {
                feldxsetzen(zeilen);
            }

            else
            {
                feldleer(zeilen,zaehler);
            }
            printf("|\n");
        }
    }
   printf("-------------------------\n");
}

void feldleer (short i, short zaehler){
    switch (i)
    {
        case 0: printf("       "); break;
        case 1: printf("       "); break;
        case 2: printf("       "); break;
        case 3: printf("   %d   ", zaehler); break;
        case 4: printf("       "); break;
        case 5: printf("       "); break;
        case 6: printf("       "); break;
    }
}

void feldnullsetzen (short i){
    switch (i)
    {
        case 0: printf("       "); break;
        case 1: printf("  000  "); break;
        case 2: printf(" 0   0 "); break;
        case 3: printf(" 0   0 "); break;
        case 4: printf(" 0   0 "); break;
        case 5: printf("  000  "); break;
        case 6: printf("       "); break;
    }
}

void feldxsetzen(short i){
    switch (i)
    {
        case 0: printf("       "); break;
        case 1: printf(" X   X "); break;
        case 2: printf("  X X  "); break;
        case 3: printf("   X   "); break;
        case 4: printf("  X X  "); break;
        case 5: printf(" X   X "); break;
        case 6: printf("       "); break;
    }
}

short eingabe(){
    int input;
do{
    printf("Ihre Eingabe: ");
    scanf("%d",&input);
    fflush(stdin);
    }while(!(input>0 && input<10));
    return input;
}

void PC_algo(int array[4][4], bool used){
    short pc_position;
    srand(time(NULL));

    if(used == false){
        if(array[1][1]==0){
            array[1][1] = 1;
        }
        //!1.Zeile
        else if((array[0][0]==2)&&(array[0][1]==2)&&(array[0][2] == 0)){
            array[0][2] = 1;
        }
        //!1.Zeile
        else if((array[0][0]==2)&&(array[0][2]==2)&&(array[0][1] == 0)){
            array[0][1] = 1;
        }
        //!1.Zeile
        else if((array[0][1]==2)&&(array[0][2]==2)&&(array[0][0] == 0)){
            array[0][0] = 1;
        }
        //!2.Zeile
        else if((array[1][0]==2)&&(array[1][1]==2)&&(array[1][2] == 0)){
            array[1][2] = 1;
        }
        //!2.Zeile
        else if((array[1][0]==2)&&(array[1][2]==2)&&(array[1][1] == 0)){
            array[1][1] = 1;
        }
        //!2.Zeile
        else if((array[1][1]==2)&&(array[1][2]==2)&&(array[1][0] == 0)){
            array[1][0] = 1;
        }
        //!3.Zeile
        else if((array[2][0]==2)&&(array[2][1]==2)&&(array[2][2] == 0)){
            array[2][2] = 1;
        }
        //!3.Zeile
        else if((array[2][0]==2)&&(array[2][2]==2)&&(array[2][1] == 0)){
            array[2][1] = 1;
        }
        //!3.Zeile
        else if((array[2][1]==2)&&(array[2][2]==2)&&(array[2][0] == 0)){
            array[2][0] = 1;
        }
        //!-----------------------------------------
        //!1.Spalte
        else if((array[0][0]==2)&&(array[1][0]==2)&&(array[2][0] == 0)){
            array[2][0] = 1;
        }
        //!1.Spalte
        else if((array[0][0]==2)&&(array[2][0]==2)&&(array[1][0] == 0)){
            array[1][0] = 1;
        }
        //!1.Spalte
        else if((array[0][1]==2)&&(array[0][2]==2)&&(array[0][0] == 0)){
            array[0][0] = 1;
        }
        //!2.Spalte
        else if((array[0][1]==2)&&(array[1][1]==2)&&(array[2][1] == 0)){
            array[2][1] = 1;
        }
        //!2.Spalte
        else if((array[0][1]==2)&&(array[2][1]==2)&&(array[1][1] == 0)){
            array[1][1] = 1;
        }
        //!2.Spalte
        else if((array[1][1]==2)&&(array[2][1]==2)&&(array[0][1] == 0)){
            array[0][1] = 1;
        }
        //!3.Spalte
        else if((array[0][2]==2)&&(array[2][2]==2)&&(array[1][2] == 0)){
            array[1][2] = 1;
        }
        //!3.Spalte
        else if((array[0][2]==2)&&(array[1][2]==2)&&(array[2][2] == 0)){
            array[2][2] = 1;
        }
        //!3.Spalte
        else if((array[1][2]==2)&&(array[2][2]==2)&&(array[0][2] == 0)){
            array[0][2] = 1;
        }
        else if(array[0][0]==0){
            array[0][0] = 1;
        }

        else if(array[0][2]==0){
            array[0][2] = 1;
        }
        else if(array[2][0]==0){
            array[2][0] = 1;
        }
        else if(array[2][2]==0){
            array[2][2] = 1;
        }
        else{
            do{
                pc_position = 1+rand() %9;

            }while(!((pc_position>0 && pc_position<10) && (array[(pc_position-1)/3][(pc_position-1)%3] == 0)));
            array[(pc_position-1)/3][(pc_position-1)%3] = 1;
        }
    }
}
Last edited on
andy1cplusplus (4)
That's the second part: 
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bool PC_algo_win_it(int array[4][4], bool used){
    srand(time(NULL));

    //!1.Zeile
    if((array[0][0]==1)&&(array[0][1]==1)&&(array[0][2] == 0)){
        array[0][2] = 1; used = true;
    }
    //!1.Zeile
    else if((array[0][0]==1)&&(array[0][2]==1)&&(array[0][1] == 0)){
        array[0][1] = 1; used = true;
    }
    //!1.Zeile
    else if((array[0][1]==1)&&(array[0][2]==1)&&(array[0][0] == 0)){
        array[0][0] = 1; used = true;
    }
    //!2.Zeile
    else if((array[1][0]==1)&&(array[1][1]==1)&&(array[1][2] == 0)){
        array[1][2] = 1; used = true;
    }
    //!2.Zeile
    else if((array[1][0]==1)&&(array[1][2]==1)&&(array[1][1] == 0)){
        array[1][1] = 1; used = true;
    }
    //!2.Zeile
    else if((array[1][1]==1)&&(array[1][2]==1)&&(array[1][0] == 0)){
        array[1][0] = 1; used = true;
    }
    //!3.Zeile
    else if((array[2][0]==1)&&(array[2][1]==1)&&(array[2][2] == 0)){
        array[2][2] = 1; used = true;
    }
    //!3.Zeile
    else if((array[2][0]==1)&&(array[2][2]==1)&&(array[2][1] == 0)){
        array[2][1] = 1; used = true;
    }
    //!3.Zeile
    else if((array[2][1]==1)&&(array[2][2]==1)&&(array[2][0] == 0)){
        array[2][0] = 1; used = true;
    }
    //!-----------------------------------------
    //!1.Spalte
    else if((array[0][0]==1)&&(array[1][0]==1)&&(array[2][0] == 0)){
        array[2][0] = 1; used = true;
    }
    //!1.Spalte
    else if((array[0][0]==1)&&(array[2][0]==1)&&(array[1][0] == 0)){
        array[1][0] = 1; used = true;
    }
    //!1.Spalte
    else if((array[0][1]==1)&&(array[0][2]==1)&&(array[0][0] == 0)){
        array[0][0] = 1; used = true;
    }
    //!2.Spalte
    else if((array[0][1]==1)&&(array[1][1]==1)&&(array[2][1] == 0)){
        array[2][1] = 1; used = true;
    }
    //!2.Spalte
    else if((array[0][1]==1)&&(array[2][1]==1)&&(array[1][1] == 0)){
        array[1][1] = 1; used = true;
    }
    //!2.Spalte
    else if((array[1][1]==1)&&(array[2][1]==1)&&(array[0][1] == 0)){
        array[0][1] = 1; used = true;
    }
    //!3.Spalte
    else if((array[0][2]==1)&&(array[2][2]==1)&&(array[1][2] == 0)){
        array[1][2] = 1; used = true;
    }
    //!3.Spalte
    else if((array[0][2]==1)&&(array[1][2]==1)&&(array[2][2] == 0)){
        array[2][2] = 1; used = true;
    }
    //!3.Spalte
    else if((array[1][2]==1)&&(array[2][2]==1)&&(array[0][2] == 0)){
        array[0][2] = 1; used = true;
    }
    //!Diagonale LO->RU
    else if((array[0][0]==1)&&(array[2][2]==1)&&(array[1][1] == 0)){
        array[1][1] = 1; used = true;
    }
    //!Diagonale LO->RU
    else if((array[0][0]==1)&&(array[1][1]==1)&&(array[2][2] == 0)){
        array[2][2] = 1; used = true;
    }
    //!Diagonale LO->RU
    else if((array[1][1]==1)&&(array[2][2]==1)&&(array[0][0] == 0)){
        array[0][0] = 1; used = true;
    }
    //!Diagonale LU->RO
    else if((array[2][0]==1)&&(array[1][1]==1)&&(array[0][2] == 0)){
        array[0][2] = 1; used = true;
    }
    //!Diagonale LU->RO
    else if((array[2][0]==1)&&(array[0][2]==1)&&(array[1][1] == 0)){
        array[1][1] = 1; used = true;
    }
    //!Diagonale LU->RO
    else if((array[1][1]==1)&&(array[0][2]==1)&&(array[2][0] == 0)){
        array[2][0] = 1; used = true;
    }
    return used;
}

void player_selection(short user_bit, int array[4][4]){
    short benutzer_position;
    bool used = false;
    srand(time(NULL));
    //Computer ist dran
    if(user_bit == 0){

        used = PC_algo_win_it(array,used);
        PC_algo(array,used);

    }
    //Benutzer ist dran
    if(user_bit == 1){
        srand(time(NULL));
        do{
            benutzer_position = eingabe();

        }while(!((benutzer_position>0 && benutzer_position<10) && (array[(benutzer_position-1)/3][(benutzer_position-1)%3] == 0)));


        array[(benutzer_position-1)/3][(benutzer_position-1)%3] = 2;
    }
}

short search_gewinner(int array[4][4]){
    short i, gewinner = 0;

    for(i = 1; i<3; i++){

        if( ((array[0][0]==i)&&(array[0][1]==i)&&(array[0][2]==i))||//1.Zeile
            ((array[1][0]==i)&&(array[1][1]==i)&&(array[1][2]==i))||//2.Zeile
            ((array[2][0]==i)&&(array[2][1]==i)&&(array[2][2]==i))||//3.Zeile
            ((array[0][0]==i)&&(array[1][0]==i)&&(array[2][0]==i))||//1.Spalte
            ((array[0][1]==i)&&(array[1][1]==i)&&(array[2][1]==i))||//2.Spalte
            ((array[0][2]==i)&&(array[1][2]==i)&&(array[2][2]==i))||//3.Spalte
            ((array[0][0]==i)&&(array[1][1]==i)&&(array[2][2]==i))||//LO->RU Diagonale
            ((array[0][2]==i)&&(array[1][1]==i)&&(array[2][0]==i))) //RO->LU Diagonale
           {
            gewinner = i;
           }
        }
        return gewinner;
}

int main(){
    bool GAME_IS_RUNNING = false, GAME_NO_RESULT = false;
    char again[2];
    int array[4][4];
    short user_bit, gewinner, Rundenzaehler = 0, Durchgaenge = 0, statistik_PC = 0, statistik_USER = 0, statistik_unentschieden = 0; //User_bit = 1 -> Benutzer ist an der Reihe; = 0 -> PC
    float Prozent;

    srand(time(NULL));

    user_bit = rand() %2;

    GAME_IS_RUNNING = true;
    while(GAME_IS_RUNNING){
            system("COLOR F2");
            Durchgaenge++;
            init_raster(array);
            raster(array);

            GAME_NO_RESULT = true;
            while(GAME_NO_RESULT){
                Rundenzaehler++;

                player_selection(user_bit, array);
                if(user_bit == 1){user_bit = 0;}
                else if(user_bit == 0){user_bit = 1;}

                raster(array);

                gewinner = search_gewinner(array);

                if(gewinner > 0){
                    GAME_NO_RESULT =false;
                    continue;
                }
                else if(Rundenzaehler == 9){
                        gewinner = 0;
                        Rundenzaehler = 0;
                        GAME_NO_RESULT =false;
                }
            }
        Rundenzaehler = 0;
        if(gewinner == 0){      statistik_unentschieden++;              printf("\nUnentschieden!\nWillst du noch einmal spielen? (y/n)< >\b\b"); scanf("%c",&again); fflush(stdin);}
        else if(gewinner == 1){ statistik_PC++; system("COLOR 4F");     printf("\nDer PC hat gewonnen!\nWillst du noch einmal spielen? (y/n)< >\b\b"); scanf("%c",&again); fflush(stdin);}
        else if(gewinner == 2){ statistik_USER++; system("COLOR 2F");   printf("\nDer User hat gewonnen!\nWillst du noch einmal spielen? (y/n)< >\b\b"); scanf("%c",&again); fflush(stdin);}

        if(again[0] == 'n'){GAME_IS_RUNNING = false;}
        else{GAME_IS_RUNNING = true;}
    }
    printf("\n\nSTATISTIK:\n");
    printf("PC  : %i\n", statistik_PC);
    printf("USER: %i\n", statistik_USER);
    printf("REMI: %i\n", statistik_unentschieden);

    Prozent = (float)statistik_unentschieden/Durchgaenge*100;
    printf("\nREMI/DURCHGANG in %c: %.2f %c\n",0x25, Prozent, 0x25);

    return 0;
}
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