首先 创建方向结构体、食物结构体、蛇身链表结构体、蛇的属性结构体 用到windows.h头文件里的gotoxy()函数,作用是将光标定位到指定坐标。-First create the direction of the structure, the structure of food, snake chain structure, the properties of the snake windows.h header file structure used in the gotoxy