Linked lists of strings (C)

[Panserbjorn]

I'm working on a program to justify a block of text. The step I'm stuck on now (haven't gotten to the justification part), is reading in the text file into a linked list of strings. I'm 99% sure I have the code that identifies what is and isn't a string working, but when I print the linked list, I either get blanks or single non-regular characters in each spot. My weakness is pointers, and I suspect that my pointers are screwing this up royally. If you could take a look and help me out, I'd much appreciate it. I'm sorry if this is too much code to post on the forum (I'm new here).

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct listNode {  /* self-referential structure */
   char *data;
   struct listNode *nextPtr;
};

typedef struct listNode LISTNODE;
typedef LISTNODE *LISTNODEPTR;

void insert(LISTNODEPTR *, char *);
void printList(LISTNODEPTR);
int isChar(char);

main()
{

	FILE *fptr;
	LISTNODEPTR startPtr = NULL;
	int maxLine = 0;
	char file_name[20];
	int count = 0;
	char c;
	char d;
	char word[50];

	printf("Type in the name of the file containing the text: \n");
	scanf("%s",file_name);
	fptr=fopen(file_name,"r");

	int numChar; /* number of characters per line */

	printf("How many characters per line?: ");
	scanf("%d", &maxLine);

	c = fgetc(fptr);

	while (d = fgetc(fptr)) != EOF) {

			/* if two new lines in a row */
			if ((c == '\n') && (d == '\n')) {
			}

			/* if not two non-characters in a row */
			else if ((isChar(c) == 0) && (isChar(d) == 0)) {
				c = d;
			}
			/* if c and d are both characters */
			else if ((isChar(c) == 1) && (isChar(d) == 1)) {
				word[count] = c;
				c = d;
				count++;
			}

			/* if c is character and d is space, return, tab, or new line */
			else if ((isChar(c) == 1) && (isChar(d) == 0)) {
				word[count] = c;

				char *newword = malloc(sizeof(word));
				newword = word;
				insert(&startPtr, newword);

				c = d;
				count = 0;
			}


			/* if d is start of new word */
			else if ((isChar(d) == 1) && (isChar(c) == 0)) {
				c = d;
			}



	}

	fclose(fptr);

	printList(startPtr);
}


int isChar(char c) {
	if ((c >= 33) && (c <= 126)) {
		return 1;
	}
	return 0;
}

/* insert into list */
void insert(LISTNODEPTR *sPtr, char *value)
{
   LISTNODEPTR newPtr, previousPtr, currentPtr;

   newPtr = malloc(sizeof(LISTNODE));


   if (newPtr != NULL) {    /* is space available */
   	  newPtr->data = malloc(sizeof(value));
   	  newPtr->data = value;
      newPtr->nextPtr = NULL;

      previousPtr = NULL;
      currentPtr = *sPtr;

      while (currentPtr != NULL && value > currentPtr->data) {
         previousPtr = currentPtr;          /* walk to ...   */
         currentPtr = currentPtr->nextPtr;  /* ... next node */
      }

      if (previousPtr == NULL) {
         newPtr->nextPtr = *sPtr;
         *sPtr = newPtr;
      }
      else {
         previousPtr->nextPtr = newPtr;
         newPtr->nextPtr = currentPtr;
      }
   }
   else
      printf("%c not inserted. No memory available.\n", value);
}

/* Print the list */
void printList(LISTNODEPTR currentPtr)
{
   if (currentPtr == NULL)
      printf("List is empty.\n\n");
   else {
      printf("The list is:\n");

      while (currentPtr != NULL) {
         printf("%c --> ", currentPtr->data);
         currentPtr = currentPtr->nextPtr;
      }

      printf("NULL\n\n");
   }
}

[Panserbjorn]

Well, I figured out why I was getting odd results for the linked list.. the printList command was printing %c instead of %s. However, new problem. The test file I'm using starts with this:

A knowledge and appreciation

When I print the linked list, it starts with the word knowledge, but misses the A. Any ideas?