#include #include #include

char square[10] = { 'o', '1', '2', '3', '4', '5', '6', '7', '8', '9' };

int checkwin(); void board();

int main() { int player = 1, i, choice;

char mark; do { board(); player = (player % 2) ? 1 : 2;

printf("Player %d, enter a number: ", player); scanf("%d", &choice);

mark = (player == 1) ? 'X' : 'O';

if (choice == 1 && square[1] == '1') square[1] = mark;

else if (choice == 2 && square[2] == '2') square[2] = mark;

else if (choice == 3 && square[3] == '3') square[3] = mark;

else if (choice == 4 && square[4] == '4') square[4] = mark;

else if (choice == 5 && square[5] == '5') square[5] = mark;

else if (choice == 6 && square[6] == '6') square[6] = mark;

else if (choice == 7 && square[7] == '7') square[7] = mark;

else if (choice == 8 && square[8] == '8') square[8] = mark;

else if (choice == 9 && square[9] == '9') square[9] = mark;

else { printf("Invalid move ");

player--; getch(); } i = checkwin();

player++; }while (i == - 1);

board();

if (i == 1) printf("==>\aPlayer %d win ", --player); else printf("==>\aGame draw");

getch();

return 0; }

/*********************************************

FUNCTION TO RETURN GAME STATUS 1 FOR GAME IS OVER WITH RESULT -1 FOR GAME IS IN PROGRESS O GAME IS OVER AND NO RESULT **********************************************/

int checkwin() { if (square[1] == square[2] && square[2] == square[3]) return 1;

else if (square[4] == square[5] && square[5] == square[6]) return 1;

else if (square[7] == square[8] && square[8] == square[9]) return 1;

else if (square[1] == square[4] && square[4] == square[7]) return 1;

else if (square[2] == square[5] && square[5] == square[8]) return 1;

else if (square[3] == square[6] && square[6] == square[9]) return 1;

else if (square[1] == square[5] && square[5] == square[9]) return 1;

else if (square[3] == square[5] && square[5] == square[7]) return 1;

else if (square[1] != '1' && square[2] != '2' && square[3] != '3' && square[4] != '4' && square[5] != '5' && square[6] != '6' && square[7] != '7' && square[8] != '8' && square[9] != '9')

return 0; else return - 1; }

/******************************************************************* FUNCTION TO DRAW BOARD OF TIC TAC TOE WITH PLAYERS MARK ********************************************************************/

void board() { system("cls"); printf(" \tTic Tac Toe ");

printf("Player 1 (X) - Player 2 (O) ");

printf(" | | "); printf(" %c | %c | %c ", square[1], square[2], square[3]);

printf("_____|_____|_____ "); printf(" | | ");

printf(" %c | %c | %c ", square[4], square[5], square[6]);

printf("_____|_____|_____ "); printf(" | | ");

printf(" %c | %c | %c ", square[7], square[8], square[9]);

printf(" | | "); }

/******************************************************************* END OF PROJECT ********************************************************************/

#include #define SIZE 9

int checkForWinner( char*, int, char* ); void drawGrid( char a[] ); void takeTurn( char*, char* ); void swapPlayer( char* );

int main() { char grid[SIZE] = {'0', '1', '2', '3', '4', '5', '6', '7', '8' }; char currentPlayer = 'O'; int counter = 0, done = 0; drawGrid( grid ); while( !done ) { takeTurn( grid, ¤tPlayer ); drawGrid( grid ); done = checkForWinner( grid, counter, ¤tPlayer ); swapPlayer( ¤tPlayer ); counter++; } }

/** drawGrid Draws the current state of the tic-tac-toe grid **/ void drawGrid( char a[] ) { printf( " " ); printf( " %c | %c | %c ", a[0], a[1], a[2] ); printf( "---|---|--- "); printf( " %c | %c | %c ", a[3], a[4], a[5] ); printf( "---|---|--- "); printf( " %c | %c | %c ", a[6], a[7], a[8] ); printf(" "); }

void takeTurn( char a[], char *playerPtr ) { int available[8]; int i, j = 0, choice; for(i = 0; i < 9; i++ ) if( (a[i] != 'X') && (a[i] != 'O') ) available[ j++ ] = i;

printf( " It is %c's turn. Choose your move (", *playerPtr );

for( i = 0; i < j; i++ ) printf( " %d", available[i]); printf( " ): "); scanf( "%d", &choice); if( *playerPtr == 'X' ) a [ choice ] = 'X'; else a[ choice ] = 'O';

}

int checkForWinner( char a[], int cnt, char* playerPtr ) { int i, gameOver = 0; for( i = 0; i < 3; i++ ) { if( a[3*i] == a[3*i + 1] && a[3*i + 1] == a[3*i + 2]) { printf( "We have a winner! It is %c. ", *playerPtr ); gameOver = 1; } if( a[i] == a[i + 3] && a[i + 3] == a[i + 6]) { printf( "Game over, man! %c dominates. ", *playerPtr ); gameOver = 1; } }

if( a[0] == a[4] && a[4] == a[8]) { printf( "%c wins on a diagonal move! ", *playerPtr ); gameOver = 1; } if( a[2] == a[4] && a[4] == a[6]) { printf( "That's it. %c has won! ", *playerPtr ); gameOver = 1;

} if( cnt == 8 && gameOver == 0 ) { printf( "Awww. There is no winner! " ); gameOver = 1; } return gameOver; }

void swapPlayer( char *playerPtr ) { if( *playerPtr == 'X' ) *playerPtr = 'O'; else *playerPtr = 'X'; }

For both of :

a. Separate the program into multiple header and source (.h and .c) files. b. Write the explanatory commands on top of each function and code blocks (such as for loops blocks, if clause blocks, while/do-while blocks, etc.) c. Use the necessary indentations throughout the code.