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

#define SIZE 9

typedef struct {
    int board[SIZE][SIZE];

    int *rows[SIZE];
    int *columns[SIZE];
    int *boxes[SIZE];
} sudoku ;

void readBoard(sudoku s, char *filename);
void parseBoard(int board[][SIZE]);

int main(int argc, char *argv[])
{
    if(--argc > 0) {
    static sudoku mysudoku;
    readBoard(mysudoku, argv[1]);
    parseBoard(mysudoku.board);
    }
    else
    printf("Missing command line argument\n");
}

void readBoard(sudoku s, char *filename) {
    FILE *fp = fopen(filename, "r");

    for (int i = 0; i < SIZE; ++i) {
    for (int j = 0; j < SIZE; ++j) {
        char c = fgetc(fp);
        if (isdigit(c)) { //if number
        s.board[i][j] = atoi(&c);
        } else if(c == '.') { //if blank
        s.board[i][j] = 0;
        }
    }
    }

    fclose(fp);
}

void parseBoard(int board[][SIZE]) {
    printf("Hello");
}