一个简单的8皇后问题的解答，里面有一个cpp文件和两个h文件，h文件一个是棋盘类，一个是写函数，cpp文件为主程序。输出为一个.txt文件，上面有所有问题的答案-A simple 8-queens problem solution, which has a cpp file and two h files, h files one is the class board, one is to write functions, cpp file-based program. Output as a.