用C语言实现贪吃蛇问题~本源代码不是用C语言编出一个图形化的贪吃蛇游戏，而是从数据结构的角度用C语言模拟实现贪吃蛇问题！他的算法设计思想~-Snake with the C language source code is not a problem ~ C language code using a graphical Snake game, but the perspective of data structure implementation using C language simula