Thread: i need this for my tictactoe game. pls help.

i have this kind of code:

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Code:

#include <stdio.h>
#include <stdlib.h>

void show_box(void);
char who_first(void);
unsigned int get_random_exponent(void);
unsigned int get_integer(int exp);
int get_sum(int a, int b);
int take_box(int input);
int player_move(void);


char box[9] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i'};
int exponent[9], n_integer[9], m_integer[9], score[2];
char answer, input, value;
int i, a, b;

int main(void)
{
    int playerMove, c;
    int score[2] = {0, 0};  
        
    printf("let's play tic-tac-toe\n\n");
    printf("your score:%d\tcomputer's score:%d\n\n\n", score[0], score[1]);
  
    show_box();
   
    get_random_exponent();
    for (i=0 ; i<9 ; i++)
        n_integer[i] = get_integer(exponent[i]);

    for(i=0 ; i<9 ; i++)
            exponent[i] = 0;
            
    get_random_exponent();
    for (i=0 ; i<9 ; i++)
        m_integer[i] = get_integer(exponent[i]);
                 
    for(i=0; i<9 ; i++)
    {       printf("%c = %d + %d\n\n", box[i], n_integer[i], m_integer[i]);
    }
    

    for (i=0 ; i<9 ; i++)
        box[i] = get_sum(n_integer[i], m_integer[i]);
        
    printf("sums:\n");
    for(i=0 ; i<9 ; i++)
            printf("%d\n", box[i]);
    
    who_first();
    if (answer == 'y'||answer == 'Y')
       {    player_move();
       }
    else if (answer == 'n'||answer == 'N')
       {    
            box[4] = 'X';
            /* computer will take the middle box */           
       }
    else 
       {   printf("i guess that's a no.");
           /* computer takes middle box */
       }
    

    scanf("%d", &answer);
    getchar();
    return 0;
}

void show_box (void)
{
    printf("\t###################\n");
    printf("\t#     #     #     #\n");
    printf("\t#  %c  #  %c  #  %c  #\n", box[0], box[1], box[2]);
    printf("\t#     #     #     #\n");
    printf("\t###################\n");
    printf("\t#     #     #     #\tyou = X\n");
    printf("\t#  %c  #  %c  #  %c  #\n", box[3], box[4], box[5]);
    printf("\t#     #     #     #\tcomputer = O\n");
    printf("\t###################\n");
    printf("\t#     #     #     #\n");
    printf("\t#  %c  #  %c  #  %c  #\n", box[6], box[7], box[8]);
    printf("\t#     #     #     #\n");
    printf("\t###################\n\n");
    

}

char who_first(void)
{   
     printf("play first (y/n)? ");
     scanf("%c", &answer);
     return answer;
}

unsigned int get_random_exponent(void)
{
    int a, b, i;   

    exponent[0] = rand() % 9;
    for (i=1 ; i<9 ; i++)
    {   a = rand() % 9;
         for (b=0 ; b<i ; b++)
        {   if (a == exponent[b])
            {  do 
                {    a = rand() % 9;
                     for (b=0 ; b<i ; b++)
                     {   if (a == exponent[b])
                         {  do 
                            {  a = rand() % 9;
                               for (b=0 ; b<i ; b++)
                                {   if (a == exponent[b])
                                   {  do 
                                        {  a = rand() % 9;
                                           for (b=0 ; b<i ; b++)
                                           {   if (a == exponent[b])
                                               {  do 
                                                  {  a = rand() % 9;
                                                     for (b=0 ; b<i ; b++)
                                                     {   if (a == exponent[b])
                                                         {  do 
                                                            {  a = rand() % 9;
                                                               for (b=0 ; b<i ; b++)
                                                               {   if (a == exponent[b])
                                                                   {  do 
                                                                      {  a = rand() % 9;
                                                                         for (b=0 ; b<i ; b++)
                                                                         {   if (a == exponent[b])
                                                                             {  do 
                                                                                {  a = rand() % 9;
                                                                                } while (a == exponent[b]);
                                                                             }
                                                                         }
                                                                      } while (a == exponent[b]);
                                                                   }
                                                               }
                                                            } while (a == exponent[b]);
                                                         }
                                                     }
                                                  } while (a == exponent[b]);
                                               }
                                           }
                                        } while (a == exponent[b]);
                                   }
                                }
                            } while (a == exponent[b]);
                         }
                     }
                } while (a == exponent[b]);
            }
        }
        exponent[i] = a;
    }
    
}

unsigned int get_integer(int exp)
{
    int value = 1;
    
    while (exp > 0)
           {     value *= 2;
                 exp--;
           }
    return value;
    
}

int get_sum(int a, int b)
{
    value = a + b;
    return value;
}

int player_move(void)
{
    printf("input the sum of the integers assigned in the square you want to take: ");
    scanf("%d", &input);
    
    for (i=0 ; i<9 ; i++)
    {   if (input == box[i])
        {  if (box[i] == 'X'||box[i] == 'O')
           {  printf("that box is already taken.\n");
              player_move();
            box[i] = 'X';
           }
        } 
        else 
        {    printf("wrong sum. try again.\n");    
             player_move();
        }
    }
    printf("you entered a wrong sum.");
    player_move();
}

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these are my problems:

1. when i execute the program, why are the list of "sums" not sums? some are even difference! how can i fix this problem?

2. this code is not yet complete. when the player inputs the sum of a box the letter in the box should be replaced with an 'X'. How can i do that?



i badly need your help guys. thanks.