#include <stdlib.h>
#define SUDOKU_SIZE 9
typedef struct {
  int grid[SUDOKU_SIZE][SUDOKU_SIZE];
} sudoku_t;
 
int main(int argc, char const *argv[]){
   sudoku_t *s = (sudoku_t *) malloc(sizeof( sudoku_t));
   s->grid[0][0]=6;//manualy setting the value of the sudoku
   //
   s->grid[8][8]=7;
   int k, l;
   printf("\n");
   for(k=0;k<SUDOKU_SIZE;k++){
       for(l=0;l<SUDOKU_SIZE;l++){
           int a=s->grid[k][l];
           printf("%d", a);
       }
       printf("\n");
   }
   printf("\n");
   return 0;
}

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