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#include <stdio.h>
#include <string.h>
char board[3][3] = {'1','2','3','4','5','6','7','8','9'};
char player = 'X';
int main();
void BOARD() //Build tic tac toe board
{
int i,j;
printf("TIC-TAC-TOE\n");
for (i=0; i<3; i++)
{for (j=0; j<3; j++)
printf("%c ",board[i][j]);
printf("\n");}
}
void Input() //Read input by user
{
int a, b, j, k;
scanf("%i", &a);
if (a==1)
{board[0][0] = player;}
if (a==2)
board[0][1] = player;
if (a==3)
board[0][2] = player;
if (a==4)
board[1][0] = player;
if (a==5)
board[1][1] = player;
if (a==6)
board[1][2] = player;
if (a==7)
board[2][0] = player;
if (a==8)
board[2][1] = player;
if (a==9)
board[2][2] = player;
if (a>9)
{printf("Out of range. Try Again!\n");
return Input();}
}
/*int invalidmove()
{
int i, j;
for (i=0; i<3; i++)
for(j=0; j<3; j++)
{if (board[i][j]==player)
return 1;}
return 0;
}*/
void TOGGLE_PLAYER()
{
if (player=='X')
player='O';
else
player = 'X';
}
int winner() //check for a winner
{
int i, j;
//player X
if (board[0][0] == 'X' && board[0][1] == 'X' && board[0][2] == 'X')
return 1;
if (board[1][0] == 'X' && board[1][1] == 'X' && board[1][2] == 'X')
return 1;
if (board[2][0] == 'X' && board[2][1] == 'X' && board[2][2] == 'X')
return 1;
if (board[0][0] == 'X' && board[1][0] == 'X' && board[2][0] == 'X')
return 1;
if (board[0][1] == 'X' && board[1][1] == 'X' && board[2][1] == 'X')
return 1;
if (board[0][2] == 'X' && board[1][2] == 'X' && board[2][2] == 'X')
return 1;
if (board[0][0] == 'X' && board[1][1] == 'X' && board[2][2] == 'X')
return 1;
if (board[0][2] == 'X' && board[1][1] == 'X' && board[2][0] == 'X')
return 1;
//player O
if (board[0][0] == 'O' && board[0][1] == 'O' && board[0][2] == 'O')
return 2;
if (board[1][0] == 'O' && board[1][1] == 'O' && board[1][2] == 'O')
return 2;
if (board[2][0] == 'O' && board[2][1] == 'O' && board[2][2] == 'O')
return 2;
if (board[0][0] == 'O' && board[1][0] == 'O' && board[2][0] == 'O')
return 2;
if (board[0][1] == 'O' && board[1][1] == 'O' && board[2][1] == 'O')
return 2;
if (board[0][2] == 'O' && board[1][2] == 'O' && board[2][2] == 'O')
return 2;
if (board[0][0] == 'O' && board[1][1] == 'O' && board[2][2] == 'O')
return 2;
if (board[0][2] == 'O' && board[1][1] == 'O' && board[2][0] == 'O')
return 2;
for (i=0; i<3; i++)
for(j=0; j<3; j++)
if(board[i][j]!='X' && board[i][j]!='O') return 0;
return 3;
}
int exit() //exit function
{
int i, j;
char a;
printf("Do you want to play again? Y/N\n");
getchar();
scanf("%ch", &a);
if (a=='Y' || a=='y')
{main();}
if (a=='N' || a=='n')
{return 0;}
if (a!='Y' || a!='y' || a!='N' || a!='n')
{printf("Invalid entry...\n");
return exit();}
else
return 0;
}
int main()
{
int a;
printf("Select an option:\n");
printf("\n1. One player\n");
printf("2. Two players\n");
printf("3. HELP\n");
printf("4. Exit\n\n");
scanf("%i", &a);
if (a==1)
printf("WORK IN PROGRESS\n");
if (a==2)
{
BOARD();
while(1)
{
Input();
BOARD();
if (winner() == 1)
{printf("X wins!\n");
exit();break;}
if (winner() == 2)
{printf("O wins!\n");
exit();break;}
if (winner() == 3)
{printf("Draw!\n");
exit();break;}
TOGGLE_PLAYER();
}
}
if (a==3)
{printf("\nTICTACTOE:\nTry to get your icon (X or O) in a row of 3 to win.\nA game in which both players fail to get their icon in a row will result\nin a draw. (Press ENTER to continue)\n");
getchar();
getchar();
return main();}
if (a==4)
{
}
if (a>4)
{printf("Not an option try again.\n");
return main();}
return 0;}
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