数据结构-顺序树的创建以及按广义表输出

 1 #include"stdio.h"
 2 #define MaxSize 30
 3 typedef char DataType;
 4 typedef struct TreeNode{
 5     DataType data[MaxSize];
 6     int count;
 7 }BinTree;
 8 int k = 0;
 9 //初始化树
10 void initBinTree(BinTree *t)
11 {
12     for( int i= 0; i< MaxSize; i++)
13     {
14         t->data[i] = '#';
15     }
16     t->count = 0;
17 }
18 //创建二叉树
19 void creatBinTree(BinTree *t, DataType array[], int index)
20 {
21     DataType ch = array[k++];
22     if( ch == ';')
23     {
24         return ;
25     }
26     if( ch != '#' )
27     {
28         t->data[index] = ch;
29         t->count++;
30         creatBinTree(t, array, index*2+1);
31         creatBinTree(t, array, index*2+2);
32     }
33 }
34 //按广义表输出二叉树
35 void printBinTree(BinTree *t, int index)
36 {
37     if(t != NULL)
38     {
39         printf("%c ",t->data[index]);
40         if( t->data[index*2+1] != '#' || t->data[index*2+2] != '#' )
41         {
42             printf("(");
43             printBinTree(t, index*2+1);
44             printf(",");
45             printBinTree(t, index*2+2);
46             printf(")");
47         }
48     }
49 }
50 main()
51 {
52     BinTree t;
53     int n;
54     int index = 0;
55     DataType ch[] = {'A','B','C','#','#','E','#','#','F','G','#','#','H','#','#',';'};
56     initBinTree(&t);
57     creatBinTree(&t, ch, index);
58     printBinTree(&t, index);
59 }