Help with Binary Search Tree insertion
The purpose of it is to grab a word from a text file, (text1.txt), and then organize the word into a BST, then grab another word, put it in the appropriate node on the BST, and repeat until EOF is reached in text1.txt.... here's the code i have so far...
Code:
#include <iostream.h>
#include <math.h>
#include <stdlib.h>
#include <fstream.h>
#include <string.h>
struct node
{
char wordFromFile [20];
node *left;
node *right;
treeNodeNew(char newWord[]);
};
struct node* allNode (char data[20])
{
struct node* node = new(struct node);
node->wordFromFile[20] = data[20];
node->left = NULL;
node->right = NULL;
return (node);
};
struct node* insert(struct node* node, char data[20])
{
if (node == NULL)
{
return(allNode(data));
}
else
{
if (data <= node->wordFromFile)
node->left = insert(node->left, data);
else
node->right = insert(node->right, data);
return(node);
}
}
int lookup(struct node* node, int target);
int main()
{
node newNode;
char word [20];
ifstream inFile1 ("text1.txt");
if (!inFile1)
{
cout<<"Error opening file!"<<endl;
exit (1);
}
while (!inFile1.eof())
{
inFile1>>word;
strcpy (newNode.wordFromFile, word);
}
inFile1.close();
return 0;
}
int lookup(struct node* allNode, char target[20])
{
if (allNode == NULL)
return (false);
else
{
if (target == allNode->wordFromFile)
return (true);
else
{
if (target < allNode->wordFromFile)
return (lookup(allNode->left, target));
else
return (lookup(allNode->right, target));
}
}
}