Code:
/* Tic-Tac-Toe */
#include <stdio.h>
void win(char board[3][3], int winner, int player, int line)
{
/* Check for a winning line - diagonals first */
if((board[0][0]==board[1][1] && board[0][0]==board[2][2])||(board[0][2]==board[1][1] && board[0][2]==board[2][0]))
{
winner = player;
}
else
{ /* Check rows and columns for a winning line */
for(line = 0; line <= 2; line++)
{
if((board[line][0]==board[line][1] && board[line][0]==board[line][2])||(board[0][line]==board[1][line] && board[0][line]==board[2][line]))
{
winner = player;
}
}
}
}
int main(void)
{
int player = 0; /* Player number - 1 or 2 */
int winner = 0; /* The winning player */
int choice = 0; /* Square selection number for turn */
int computer_choice = 0;
int row = 0; /* Row index for a square */
int column = 0; /* Column index for a square */
int line=0; /* Row or column index in checking loop */
int player_count=0;
char board[3][3] = { /* The board */
{'1','2','3'}, /* Initial values are reference numbers */
{'4','5','6'}, /* used to select a vacant square for */
{'7','8','9'} /* a turn. */
};
printf("How many players are going to play?\n"); /*select amount of players between 1 and 2*/
scanf(" %d", &player_count);
if(player_count < 1 || player_count > 2)
{
printf("invalid selection, choose between 1 or 2 players!\n");
return 0;
}
if(player_count == 1)
{
printf("The computer will be Player 2\n");
}
/* The main game loop. The game continues for up to 9 turns */
/* As long as there is no winner */
for(int i = 0; i<9 && winner==0; i++)
{
/* Display the board */
printf("\n\n");
printf(" %c | %c | %c\n", board[0][0], board[0][1], board[0][2]);
printf("---+---+---\n");
printf(" %c | %c | %c\n", board[1][0], board[1][1], board[1][2]);
printf("---+---+---\n");
printf(" %c | %c | %c\n", board[2][0], board[2][1], board[2][2]);
player = i%2 + 1; /* Select player */
if(player_count == 2)
{
/* Get valid player square selection */
do
{
printf("\nPlayer %d, please enter the number of the square where you want to place your %c: ", player, (player==1)?'X':'O');
scanf(" %d", &choice);
row = --choice/3; /* Get row index of square */
column = choice%3; /* Get column index of square */
}while(choice<0 || choice>9 || board[row][column]>'9');
/* Insert player symbol */
board[row][column] = (player == 1) ? 'X' : 'O';
}
if(player_count == 1)
{
player = 1;
do /*player's turn*/
{
printf("\nPlayer %d, please enter the number of the square where you want to place your %c: ", player, (player==1)?'X':'O');
scanf("%d", &choice);
row = --choice/3; /* Get row index of square */
column = choice%3; /* Get column index of square */
}while(choice<0 || choice>9 || board[row][column]>'9');
/* Insert player symbol */
board[row][column] = (player == 1) ? 'X' : 'O';
printf("Y"); /*temporary printf to ensure that we don't get stuck in an infinity loop*/
do /*computer turn*/
{
/*minimax algorithm.... hopefully*/
}while(choice<0 || choice>9 || board[row][column]>'9');
}
win(board, winner, player, line); /*check if the game is won*/
}
/* Game is over so display the final board */
printf("\n\n");
printf(" %c | %c | %c\n", board[0][0], board[0][1], board[0][2]);
printf("---+---+---\n");
printf(" %c | %c | %c\n", board[1][0], board[1][1], board[1][2]);
printf("---+---+---\n");
printf(" %c | %c | %c\n", board[2][0], board[2][1], board[2][2]);
/* Display result message */
if(winner == 0)
printf("\nHow boring, it is a draw\n");
else
printf("\nCongratulations, player %d, YOU ARE THE WINNER!\n",
winner);
return 0;
}
Originally Posted by Absurd
