/* check.c - checks (parts of) Sudoku puzzle for legality
   YOUR NAME(S), DATE */

#include <stdio.h>

/* constants to return from your check functions */
#define PERFECT 2
#define OKAY    1
#define ILLEGAL 0
#define UNDONE -1

/* REQUIRED: COMPLETE okRow TO RETURN EITHER OKAY OR ILLEGAL.
   OPTIONAL: OR RETURN PERFECT IF THE ROW IS PERFECT. */
int okRow(int row[]) {
    return UNDONE;
}

/* OPTIONAL: SAME AS ABOVE BUT FOR COLUMN k OF puzzle. */
int okColumn(int puzzle[9][9], int k) {
    return UNDONE;
}

/* DO NOT CHANGE ANYTHING BELOW */
int main(void) {
    int puzzle[9][9], i, j;
    char *result[] = {"illegal", "okay", "perfect"};

    /* fill array with data from user */
    printf("enter 81 puzzle values in row order:\n");
    for (i=0; i<9; i++)
        for (j=0; j<9; j++)
            if (scanf("%i", &puzzle[i][j]) < 1) {
                fprintf(stderr, "bad or incomplete data\n");
                return 1;
            }

    /* print checks of all rows if okayRow function done */
    for (i=0; i<9; i++) {
        int r = okRow(puzzle[i]);
        if (r >= 0 && r <= 2)
            printf("row %d is %s\n", i, result[r]);
    }

    /* print checks of all columns if okayColumn done */
    for (i=0; i<9; i++) {
        int r = okColumn(puzzle, i);
        if (r >= 0 && r <= 2)
            printf("column %d is %s\n", i, result[r]);
    }

    return 0;
}