"Classic Game Programming Problem" C language: Writing a board game, combined with a two-dimensional array

#include <stdio.h> #include <stdlib.h>char arr[3][3];void print () { int i=0;  for (i=0;i<3;i++)  {  printf ("%c|%c|%c|\n", arr[i][0],arr[i][1],arr[i][2]);   printf (" _|_|_|\n ");  }}void init_arr () { int i=0; int j=0; for (i=0;i<3;i++)  {   for (j=0;j<3;j++)   {   arr[i][j]= '   ';   } }}void  player () { int i=0; int j=0; printf ("input i,j:\n"); &NBSP;SCANF ("%d %d", &i, &AMP;J); i--; j--; if  (arr[i][j]!= '   ')  {  printf ("This grid has been entered, please re-enter i,j:\n");   player ();  } else {  arr[i][j]= ' X ';  }}void computer_move () {  int i=0; int j=0; for (i=0;i<3;i++)  {  for (j=0;j<3;j++)    {   if (arr[i][j]== '   ')    {    arr[i][j]= ' 0 ';     breAk;   }  }  break; }}char win () { int i=0; for (i=0; i<3;i++)  {  if ((arr[i][0]==arr[i][1]) &&    (arr[i][1]==arr[i][2]))   {   return arr[i][0];  } }  for (i=0;i<3;i++)   {  if (arr[0][i]==arr[1][i) &&    (Arr[1][i]==arr[2][i])   {    return arr[0][i];   } } }int main () { char done;  Int i; int j; done= '   ';  init_arr ();  printf ("board game: \ n");  do   {   print ();    player ();    done=win ();    if ( done!= '   ')    {    break;   }   computer_ Move ();    done=win ();   }while (done== '   ');    if (done== ' 0 ')     {    printf ("Computer win \ n");   }   else   {     printf ("player wins \ \");    }   print ();    }

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"Classic Game Programming Problem" C language: Writing a board game, combined with a two-dimensional array