/*
 * eight_queens.c  --
 *
 *   Place eight queens on a chess board so that not two queens threaten
 *   each other. A chess board has 8 x 8 squares, and a queen threatens
 *   the chess pieces on the same row, the same column, or the same diagonal.
 */


#include <stdio.h>

struct position {
    int row;
    int col;
};


int is_valid(struct position queens[], int row, int col);
void print_chess_board(struct position queens[]);


int
main()
{

    return 0;
}

void
print_chess_board(struct position queens[])
{
    int i,j;

    for (i=0; i<8; i++) {
        for (j=0; j<8; j++) {
            if (queens[i].col == j)
                printf("X ");
            else
                printf("o ");
        }

        printf("\n");
    }
}