1. 蛇移动的思想：

        其实就是删除头节点 ，增加尾节点；一句代码搞定

        struct Snake *p; p =head; head = head -> next; free(p)   防止造成多的空间节点

2.增加尾节点代码思想：

        2.1 .开辟new 节点的空间  struct Snake *new = (struct Snake *)malloc (sizeof(struct Snake));

        2.2 . 新节点的行 new ->hang = tail -> hang;

                新节点的列 new ->lie =tail -> lie+1;

                增加new节点 ：tail -> next = new; 

                新的尾巴        ： tail = new ;           

void addNode()
{struct Snake *new = (struct Snake *)malloc(sizeof(struct Snake));new -> hang = tail -> hang;new -> lie = tail -> lie+1;tail -> next = new;tail = new;
}void deleteNode()
{struct Snake *p;p = head;head = head ->next;free(p);    // fang zhi zao cheng hen duo kong yu de jie dian
}void moveSnake()
{struct Snake *p;struct Snake *new;addNode();deleteNode();
}
int main()
{int ctr;initNcurses();initSnakebody();gamePic();while(1){ctr = getch();if(ctr == KEY_RIGHT){moveSnake();gamePic();}}getch();endwin();return 0;
}