我正在实施一个绳索数据结构。如何传递我的字符串值？它们显示为“（null）”。我认为我的char字设置不正确。我是C的新手，来自C ++。这最终是一个文本编辑器，但是现在我只是试图通过索引号在有序列表中显示输入的字符串。
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct treeNode
{
int i, length;
char word;
struct treeNode *left;
struct treeNode *right;
} treeNode;
treeNode *insert(treeNode *node, int i, char word, int length)
{
printf("Insert %d :", word);
if(node==NULL)
{
treeNode *temp;
temp = (treeNode *)malloc(sizeof(treeNode));
temp->i = i;
temp->word;
temp->length;
temp->left = temp->right = NULL;
return temp;
}
if(i >(node->i))
node->right = insert(node->right, i, word, length);
else if(i < (node->i))
node->left = insert(node->left,i,word,length);
return node;
}
void PrintInorder(treeNode *node)
{
if(node==NULL)
return;
PrintInorder(node->left);
printf("%d", node->i);
printf("%s", node->word);
PrintInorder(node->right);
}
void main()
{
treeNode *root = NULL;
char word[256];
int length, a;
for(a = 0; a < 3; a++)
{
printf("Enter word: ");
scanf("%s", word);
length = strlen(word);
root = insert(root, a, *word,length);
}
printf("Print in order:\n");
PrintInorder(root);
}
答案 0 :(得分：1)
char *word中需要treeNode来表示字符串（有点绳索）。您需要使用insert定义char *word，并使用word调用它，而不是*word（因为在调用上下文中，这将是{{1}的第一个字符}）。最后，您确实需要一些任务：word。
代码中还有其他逻辑错误，特别是没有以任何重要方式处理temp->word = word或i，但它们并不会阻止您按顺序打印，至少。
编辑：
length答案 1 :(得分：0)
这是一个解决方案。再次感谢Amadan
3: 1, 1, 1
5: 1, 2, 2
6: 2, 2, 2
7: 1, 3, 3
7: 2, 2, 3
8: 2, 3, 3
9: 1, 4, 4
9: 2, 3, 4
9: 3, 3, 3
10: 2, 4, 4
10: 3, 3, 4
11: 1, 5, 5
11: 2, 4, 5
11: 3, 3, 5
11: 3, 4, 4
12: 2, 5, 5
12: 3, 4, 5
12: 4, 4, 4
13: 1, 6, 6
13: 2, 5, 6
13: 3, 4, 6
13: 3, 5, 5
13: 4, 4, 5
14: 2, 6, 6
14: 3, 5, 6
14: 4, 4, 6
14: 4, 5, 5
15: 1, 7, 7
15: 2, 6, 7
15: 3, 5, 7
15: 3, 6, 6
15: 4, 4, 7
15: 4, 5, 6
15: 5, 5, 5
16: 2, 7, 7
16: 3, 6, 7
16: 4, 5, 7
16: 4, 6, 6
16: 5, 5, 6
17: 1, 8, 8
17: 2, 7, 8
17: 3, 6, 8
17: 3, 7, 7
17: 4, 5, 8
17: 4, 6, 7
17: 5, 5, 7
17: 5, 6, 6
18: 2, 8, 8
18: 3, 7, 8
18: 4, 6, 8
18: 4, 7, 7
18: 5, 5, 8
18: 5, 6, 7
18: 6, 6, 6
19: 1, 9, 9
19: 2, 8, 9
19: 3, 7, 9
19: 3, 8, 8
19: 4, 6, 9
19: 4, 7, 8
19: 5, 5, 9
19: 5, 6, 8
19: 5, 7, 7
19: 6, 6, 7
20: 2, 9, 9
20: 3, 8, 9
20: 4, 7, 9
20: 4, 8, 8
20: 5, 6, 9
20: 5, 7, 8
20: 6, 6, 8
20: 6, 7, 7
21: 1, 10, 10
21: 2, 9, 10
21: 3, 8, 10
21: 3, 9, 9
21: 4, 7, 10
21: 4, 8, 9
21: 5, 6, 10
21: 5, 7, 9
21: 5, 8, 8
21: 6, 6, 9
21: 6, 7, 8
21: 7, 7, 7
22: 2, 10, 10
22: 3, 9, 10
22: 4, 8, 10
22: 4, 9, 9
22: 5, 7, 10
22: 5, 8, 9
22: 6, 6, 10
22: 6, 7, 9
22: 6, 8, 8
22: 7, 7, 8
23: 1, 11, 11
23: 2, 10, 11
23: 3, 9, 11
23: 3, 10, 10
23: 4, 8, 11
23: 4, 9, 10
23: 5, 7, 11
23: 5, 8, 10
23: 5, 9, 9
23: 6, 6, 11
23: 6, 7, 10
23: 6, 8, 9
23: 7, 7, 9
23: 7, 8, 8
24: 2, 11, 11
24: 3, 10, 11
24: 4, 9, 11
24: 4, 10, 10
24: 5, 8, 11
24: 5, 9, 10
24: 6, 7, 11
24: 6, 8, 10
24: 6, 9, 9
24: 7, 7, 10
24: 7, 8, 9
24: 8, 8, 8
25: 1, 12, 12
25: 2, 11, 12
25: 3, 10, 12
25: 3, 11, 11
25: 4, 9, 12
25: 4, 10, 11
25: 5, 8, 12
25: 5, 9, 11
25: 5, 10, 10
25: 6, 7, 12
25: 6, 8, 11
25: 6, 9, 10
25: 7, 7, 11
25: 7, 8, 10
25: 7, 9, 9
25: 8, 8, 9
26: 2, 12, 12
26: 3, 11, 12
26: 4, 10, 12
26: 4, 11, 11
26: 5, 9, 12
26: 5, 10, 11
26: 6, 8, 12
26: 6, 9, 11
26: 6, 10, 10
26: 7, 7, 12
26: 7, 8, 11
26: 7, 9, 10
26: 8, 8, 10
26: 8, 9, 9
27: 1, 13, 13
27: 2, 12, 13
27: 3, 11, 13
27: 3, 12, 12
27: 4, 10, 13
27: 4, 11, 12
27: 5, 9, 13
27: 5, 10, 12
27: 5, 11, 11
27: 6, 8, 13
27: 6, 9, 12
27: 6, 10, 11
27: 7, 7, 13
27: 7, 8, 12
27: 7, 9, 11
27: 7, 10, 10
27: 8, 8, 11
27: 8, 9, 10
27: 9, 9, 9
28: 2, 13, 13
28: 3, 12, 13
28: 4, 11, 13
28: 4, 12, 12
28: 5, 10, 13
28: 5, 11, 12
28: 6, 9, 13
28: 6, 10, 12
28: 6, 11, 11
28: 7, 8, 13
28: 7, 9, 12
28: 7, 10, 11
28: 8, 8, 12
28: 8, 9, 11
28: 8, 10, 10
28: 9, 9, 10
29: 1, 14, 14
29: 2, 13, 14
29: 3, 12, 14
29: 3, 13, 13
29: 4, 11, 14
29: 4, 12, 13
29: 5, 10, 14
29: 5, 11, 13
29: 5, 12, 12
29: 6, 9, 14
29: 6, 10, 13
29: 6, 11, 12
29: 7, 8, 14
29: 7, 9, 13
29: 7, 10, 12
29: 7, 11, 11
29: 8, 8, 13
29: 8, 9, 12
29: 8, 10, 11
29: 9, 9, 11
29: 9, 10, 10