#include <stdio.h> #include<iostream> #include<stdlib.h> #include<stdio.h> #define MAXSIZE 20 using namespace std; struct BiTreeNode//二叉树结点定义 { BiTreeNode* LChild;//左孩子指针域 int data; BiTreeNode* RChild;//右孩子指针域 }; struct Stack//栈的定义 { int base;//栈底指针 int top;//栈顶指针 BiTreeNode BTNS[MAXSIZE];//二叉树结点数组 int stackSize;//栈可用的最大容量 }; void InitStack(Stack*& S)//初始化栈 { S = (Stack*)malloc(sizeof(Stack)); S->top = S->base = 0; S->stackSize = MAXSIZE; } bool StackEmpty(Stack*& S)//判断栈是否为空 { if (S->base == S->top) { return true; } else { return false; } } bool StackFull(Stack*& S)//判断栈是否已满 { if (S->top - S->base == S->stackSize) { //栈已满 return true; } else { //栈不满 return false; } } void Push(Stack*& S, BiTreeNode*& T)//元素入栈 { if (StackFull(S) == true) { //如果栈已满, 则直接返回 return; } S->BTNS[S->top].data = T->data; S->BTNS[S->top].LChild = T->LChild; S->BTNS[S->top].RChild = T->RChild; S->top++; } BiTreeNode* Pop(Stack*& S)//元素出栈 { if (StackEmpty(S) == true) { return NULL; } S->top--; return &(S->BTNS[S->top]); } // void CreateBiTree(BiTreeNode*& T)//以先序序列创建二叉树 { char ch; cin >> ch; if (ch != '#') { T = (BiTreeNode*)malloc(sizeof(BiTreeNode)); T->data = ch; CreateBiTree(T->LChild); CreateBiTree(T->RChild); } else { T = NULL; } } void InOrderTraverse(Stack*& S, BiTreeNode*& T)//中序遍历二叉树的非递归算法(※) { InitStack(S);//初始化栈 BiTreeNode* p = T; BiTreeNode* q; while (p || !StackEmpty(S)) { if (p) { Push(S, p); p = p->LChild; } else { q = Pop(S);//出栈元素指针保存在q中 putchar(q->data); cout << " "; p = q->RChild; } } } int main() { Stack* S; BiTreeNode* T; CreateBiTree(T); InOrderTraverse(S, T); return 0; }请帮我把代码优化一下