Write C program to implement Tic-Tac-Toe game

Aim:- Write C/C++ program to implement Tic-Tac-Toe game.

C Program Code:

             

    #include<stdio.h>;
    #include<conio.h>;
    char tic[10]={'0','1','2','3','4','5','6','7','8','9'};
    int win();
    void game();
    int main()
    {
        int player=1,i,choice;
        char mark;
        do
        {
            game();
            player = (player % 2) ? 1 : 2;
    
            printf("Player %d Move : ",player);
            scanf("%d",&choice);
    
            mark = (player == 1) ? 'X' : 'O';
    
            if (choice == 1 && tic[1] == '1')
                tic[1] = mark;
                
            else if (choice == 2 && tic[2] == '2')
                tic[2] = mark;
                
            else if (choice == 3 && tic[3] == '3')
                tic[3] = mark;
                
            else if (choice == 4 && tic[4] == '4')
                tic[4] = mark;
                
            else if (choice == 5 && tic[5] == '5')
                tic[5] = mark;
                
            else if (choice == 6 && tic[6] == '6')
                tic[6] = mark;
                
            else if (choice == 7 && tic[7] == '7')
                tic[7] = mark;
                
            else if (choice == 8 && tic[8] == '8')
                tic[8] = mark;
                
            else if (choice == 9 && tic[9] == '9')
                tic[9] = mark;            
            else
            {
                printf("Not Valid");
                player--;
                getch();
            }
            i = win();
            player++;
        }
        while (i == -1);
        
        game();
        
        if (i == 1)
            printf("Player %d Win", --player);
        else
            printf("It's Tie..");
    
        getch();
    
        return 0;
    }
    
    int win()
    {
        if (tic[1] == tic[2] && tic[2] == tic[3])
            return 1;
            
        else if (tic[4] == tic[5] && tic[5] == tic[6])
            return 1;
            
        else if (tic[7] == tic[8] && tic[8] == tic[9])
            return 1;
            
        else if (tic[1] == tic[4] && tic[4] == tic[7])
            return 1;
            
        else if (tic[2] == tic[5] && tic[5] == tic[8])
            return 1;
            
        else if (tic[3] == tic[6] && tic[6] == tic[9])
            return 1;
            
        else if (tic[1] == tic[5] && tic[5] == tic[9])
            return 1;
            
        else if (tic[3] == tic[5] && tic[5] == tic[7])
            return 1;
            
        else if (tic[1] != '1' && tic[2] != '2' && tic[3] != '3' &&
            tic[4] != '4' && tic[5] != '5' && tic[6] != '6' && tic[7] 
            != '7' && tic[8] != '8' && tic[9] != '9')
            return 0;
        else
            return -1;
    }
    
    void game()
    {
        printf("Player 1 (X) & Player 2 (O)\n\n\n");
        printf(" %c | %c | %c \n", tic[1], tic[2], tic[3]);
        printf("___|___|___\n");
        printf(" %c | %c | %c \n", tic[4], tic[5], tic[6]);
        printf("___|___|___\n");
        printf(" %c | %c | %c \n", tic[7], tic[8], tic[9]);
        printf("   |   |   \n\n");
    }
            
        

Output: