设计程序实现二叉树结点的类型定义和对二叉树的基本操作。该程序包括二叉树结构类型以及每一种操作的具体的函数定义和主函数-Design procedures to achieve binary tree node type definitions and basic operation of the binary tree. The program includes a binary tree structure type, as well as each operation of the specific function is defined and the main function