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 () function, the role is to position the cursor to the specified coordinates.