经典N皇后问题：通过编程布局，使任两个皇后都不能处于同一条横行、纵行或斜线上，包含C和C++两种语言代码，其中C语言是以八皇后为特例的。-The classic N-queens problem: let any two queens be not in the same horizontal, vertical or diagonal by using C and C++ language programming, and the C language is based on the eigh