[ron76]

The site wouldnt allow me to edit my post, so I could provide explanation.

So here it is with explanation.


Hey ...
I just typed this code, but I am getting pointer errors. This is a very basic program in pointer. Please help.

The pointers I am getting are:
* assignment from incompatible pointer type
* incompatible types in assignment

This is the code. I have highlighted the lines that have error. This is the main file.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "LinkedList.h"


#define MAX 10000 // maximum letters in a string

int main()
{
	char string[WORD_LEN];
	char fileName[WORD_LEN];
	Node *List[MAX];//array of linked list
	char token[WORD_LEN];// token to tokenize
	int i = 0;
    int result=0;
    int bucket=0;  // bucket for hashing
	int key =0;
	int linenum=0;
	char input_file[MAX];
    const char seperator[] = " !@#$%^&*()-<>-,./\{}?~`:;'\"";
	Node *temp = NULL;
	FILE *fp;
	strcpy(fileName,"words.txt");

	fp = fopen(fileName,"r");


	if (fp == NULL)
	{
		printf("Cannot open file for reading\n");
		return EXIT_FAILURE;
	}

	else
	{
		while(fgets(string, WORD_LEN, fp))
		{
			key = 0;
			for (i=0;i<strlen(string);i++) // producing hash key     
                                                                                for the string
			{
				key += (int) string[i];
			}
			bucket = (int) key % MAX;   //pucket number for the 
                                                                                string
			temp = List[bucket];
			if (List[bucket] == NULL)
				temp=addhead(string,temp);// if that array 
                                                                                   node is empty
    		else
    	    	List[bucket]=add(string,temp);
		}
	}

	fclose(fp);
	printf("The dictionary has been loaded into the Table array  \n");

	while (scanf("%s", input_file)!=EOF)
	{
		++linenum;
		token = strtok(input_file,seperator);

		key=0;

		for(i=0;i<strlen(token);i++) //hashing
		{
			key += (int) token[i];
		}

		bucket = key % MAX;

		i=0;
		temp = List[bucket];
		result = lookupDictionary(token, temp);


		if (result == 0)
			printf("Spelling error \n word: %s  line: %d",token,linenum);

	}
	printf("\n Search complete \n");
	printf("Program completed successfully\n");
	return 0;

}

Node *newNode(char *string)
{
	Node *newNode;

	strcpy(newNode->string,strtok(string, " "));
	newNode->next = NULL;
	return(newNode);
}

Node *add(char *string, Node *temp)
{
	Node *new = newNode(string);

	temp->next = new;
	return(new);
}

Node *addhead(char *string, Node *temp)
{
	Node *new = newNode(string);

	Node *head = NULL;

    head = new;
	return (new);
}

int lookupDictionary (char *word, Node *temp)
{
	while (temp->string != word)
	{
		temp = temp->next;
	}

	if (temp->string == word)
		return TRUE;
	else
		return FALSE;
}

This is the header file.

#ifndef _LINKEDLIST
#define _LINKEDLIST
#define TRUE 1
#define FALSE 0

typedef struct NODE Node;
#define WORD_LEN 15

struct NODE
{
	char string[WORD_LEN];
	struct Node *next;

};

Node *newNode(char *string);
Node *add(char *string, Node *temp);
Node *addhead(char *string, Node *temp);
int lookupDictionary (char word[0], Node *temp);
#endif

This program is supposed to input a list into the array of linked lists[I am trying to create a dynamic table].After that it takes a txt file and looks up the dictionary, which all words are presnt in the dictionary.



Please assist. I have just these 3 errors. Pointers drive me cuckoo..