编辑代码

#include <stdio.h>
#include <stdbool.h>

#define N 8

int board[N][N];

bool isSafe(int row, int col) {
    int i, j;
    for (i = 0; i < row; i++) {
        if (board[i][col] == 1) {
            return false;
        }
    }
    for (i = row, j = col; i >= 0 && j >= 0; i--, j--) {
        if (board[i][j] == 1) {
            return false;
        }
    }
    for (i = row, j = col; i >= 0 && j < N; i--, j++) {
        if (board[i][j] == 1) {
            return false;
        }
    }
    return true;
}

bool solveNQueens(int row) {
    if (row == N) {
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                printf("%d ", board[i][j]);
            }
            printf("\n");
        }
        return true;
    }
    for (int col = 0; col < N; col++) {
        if (isSafe(row, col)) {
            board[row][col] = 1;
            if (solveNQueens(row + 1)) {
                return true;
            }
            board[row][col] = 0;
        }
    }
    return false;
}

int main() {
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            board[i][j] = 0;
        }
    }
    solveNQueens(0);
    return 0;
}