Thread: Problems on creating a sudoku verifier

Originally Posted by twoxacross

last question:
How can I add a whole row,column or box?(Should I do if(a[0]+a[1]+...+a[8] = 45)
printf(...

or is there a shorter way to do it?

And how can I make the program verify if a number is not repeated in a row,column,and a box?

That my friend is why the C Gods gave us loops....

Originally Posted by AndrewHunter

Hmm...looks like I could have used a loop for the replies.

You know buddy ain't reading text... merely trying to scoop and poop code samples when he asks a question AFTER you answer it!

At that point, any further attempts to educate or direct would be better focused upon that huge rock in your neighbor's back yard...

I tried coding it.The only part left is verifying a 3x3 box and verifying if the digits are valid.I don't get errors when compiling,but when I run the executable file,after entering the digits,I receive an error report with the "send and don't send options".

Code:

#include<stdio.h>
#include<string.h>

int main() {

    char input[81];
    int board[9][9];
    int row;
    int col;
    int x,y;
    
    printf("Enter 81 consecutive digits for a sudoku board: ");
    scanf("%s", &input);
   
   
    void displayValid() {
         printf("Valid sudoku board");
}     
   
      for(col = 0; col < 9; col++) 
        if(col != x && board[x][col] == board[x][y]) 
               printf("Not a valid sudoku board");
 
 
      for(row = 0; row < 9; row++) 
        if(row != x && board[row][y] == board[x][y]) 
               printf("Not a valid sudoku board");    
 
      
      for(x = 0;x < 9; x++) 
        for(y = 0;y < 9;y++) 
          if(board[x][y] != 0) 
            printf("Not a valid sudoku board");
      

      for(x = 0;x < 9;x++) 
         for(y = 0;y < 9;y++) 
          if((board[x][y] < 0) || (board[x][y] > 9)) 
             printf("Not a valid sudoku board");
  
      
      for(x = 0;x < 9;x++) 
       for(y = 0;y < 9;y++) 
        if(board[x][y] != 0) 
          printf("Not a valid sudoku board"); 
      
      else {
       displayValid();
}                  
        
               
    getche();
    return 0;
}

Thanks.

I forgot that it starts from [0] not [1].