数据结构-二叉树的创建和先序遍历 

 1 #include "stdio.h"
 2 #include "stdlib.h"
 3 #include "string.h"
 4 typedef char DataType;
 5 typedef struct BinTree{
 6     DataType key;       //数据存放
 7     struct BinTree *left;  //左孩子
 8     struct BinTree *right; //右孩子
 9 }BinTree;
10 int count = 0;
11 BinTree *createBinTree()
12 {
13     DataType ch;
14     BinTree *T;
15 
16     ch = getchar();
17     getchar();  //接收输入的回车符
18     if(ch!='#')
19     {
20         T=(BinTree*)malloc(sizeof(BinTree));    //创建节点
21         T->key=ch;
22         T->left=createBinTree();
23         T->right=createBinTree();
24     }
25     else
26     {
27         T=NULL;
28     }
29     return T;
30 }
31 //先序遍历
32 void BinTreePrint(BinTree *t)
33 {
34     if(t != NULL)
35     {
36         printf("%c ",t->key);
37         BinTreePrint(t->left);
38         BinTreePrint(t->right);
39     }
40 }
41 main()
42 {
43     BinTree *t;
44     t = createBinTree();
45     BinTreePrint(t);
46 }

 

posted @ 2019-05-27 12:00  oops_w  阅读(370)  评论(0)    收藏  举报