sudoko

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

void verifica(int **m){
  int aux1 = 0, aux2 = 0, flag = 0;
  int h, i, j;
  for(h = 0; h < 9; h++){
    for(i = aux1; i < aux1+3; i++){
      for(j = aux2; j < aux2+3; j++){
        if(!(m[i][j] <= 9 && m[i][j] >= 1)){
          flag = 1;
          break;
        }
      }
      if(flag)break;
      aux2 += 3;
    }
    if(flag)break;
    aux1++;
    aux2 = 0;
  }
  if(flag){
    printf("N\n");
  }else{
    printf("S\n");
  }
}
int main(){

    FILE *myFile;
    myFile = fopen("numbers.txt", "r");

    //read file into array
    int i, j;
    int **sudoku = calloc(9, sizeof(int*));
    for(i = 0; i < 9; i++){
        sudoku[i] = calloc(9, sizeof(int));
    }

    if (myFile == NULL){
        printf("Error Reading File\n");
        exit (0);
    }

    for (i = 0; i < 9; i++){
        for(j = 0; j < 9; j++){
            fscanf(myFile, "%d ", &sudoku[i][j]);
        }
    }

    for (i = 0; i < 9; i++){
        for(j = 0; j < 9; j++){
            printf("%d ", sudoku[i][j]);
        }
        printf("\n");
    }
    verifica(sudoku);

    fclose(myFile);
    for(i = 0; i < 9; i++){
      free(sudoku[i]);
    }
    free(sudoku);

    return 0;
}