rj_adt.h

建立一棵二叉树

# include <stdio.h>
# include <stdlib.h>
  typedef int Etype;
  typedef struct BiTNode  /* 树结点结构 */
      {  Etype data;
	     struct BiTNode *lch,*rch;
      }BiTNode;
/* 函数原形声明 */
BiTNode *creat_bt1();
void preorder(BiTNode *t);
BiTNode *t;