利用链表实现Conway生命模型，在free.txt里输入初始的图样。空格表示死亡，命令行参数为 conway.exe free.txt [n],n为繁殖代数。-Realize the conway module with linklist. present the initialize picture in free.txt. space stands for dead,* stands for alive. the command line parameter are conway.exe free.txt [n], n stands for the generations.