二叉树

#include"iostream"
#include"stdio.h"
using namespace std;
typedef struct BiTNode{
	char data;
	struct BiTNode *lchild, *rchild;
}BiTNode, *BiTree;
/*创建一颗二叉树*/
void CreatBiTree(BiTree *T)
{
	char c;
	cin >> c;
	if (c == '#') *T = NULL;
	else
	{
		*T = new BiTNode;//创建根节点，给根节点开辟空间
		(*T)->data = c; //将c的值存入T的数据域中
		CreatBiTree(&(*T)->lchild);//递归地创建左子树
		CreatBiTree(&(*T)->rchild);//递归地创建右子树
	}
}


void visit(char c, int level)
{
	cout << c << " is at " << level << "th level of BiTree" << endl;
}
void PreOrderTraverse(BiTree T, int level)
{
	if (T)
	{
		visit(T->data, level);
		PreOrderTraverse(T->lchild, level + 1);
		PreOrderTraverse(T->rchild, level + 1);

	}
}

void ZHONGOrderTraverse(BiTree T, int level)
{
	if (T)
	{
		
		PreOrderTraverse(T->lchild, level + 1);
		visit(T->data, level);
		PreOrderTraverse(T->rchild, level + 1);

	}
}

void HOUOrderTraverse(BiTree T, int level)
{
	if (T)
	{
	
		PreOrderTraverse(T->lchild, level + 1);
		PreOrderTraverse(T->rchild, level + 1);
		visit(T->data, level);

	}
}

int getleafNode(BiTree T)//利用递归用叶子结点个数
{
	if (T == NULL)
		return 0;
	if (T->lchild == NULL&&T->rchild == NULL)
		return 1;
	return getleafNode(T->lchild) + getleafNode(T->rchild);
}

int getTreeCount(BiTree T)
{
	if (T == NULL)
		return 0;
	return getTreeCount(T->lchild) + getTreeCount(T->rchild)+1;

}

int getheight(BiTree T)
{
	if (T == NULL)
	{
		return 0;
	}

	else
	{
		int hl = getheight(T->lchild);
		int hr = getheight(T->rchild);
		if (hl > hr)
			return ++hl;
		else
			return ++hr;
	}
}

int main()
{
	int level = 1;
	BiTree T = NULL;//初始化根节点
	CreatBiTree(&T);
	PreOrderTraverse(T, level);
	cout <<"该二叉树叶子结点的个数："<< getleafNode(T) << endl;
	cout << "该二叉树结点个数：" << getTreeCount(T) << endl;
	cout << "该二叉树的高度：" << getheight(T) << endl;


}