reading in a txt file into a list

here is my code so far

Code:

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

typedef struct { char l[20]; struct List *next; } List;

List *insertList (char head, List *tail)
{
	List *t = calloc (1, sizeof (List));
	t -> l = head;
	t -> next = tail;
	return t;
}


static FILE *open_file (char *file, char *mode)
{
  FILE *fp = fopen (file, mode);
  if (fp == NULL){
    perror ( "Unable to open file" );
    exit ( EXIT_FAILURE );
  }
  return fp;
}

int main (int argc, char *argv[])
{
int ch;
FILE *in;

 if ( argc != 3 ) {
    fprintf ( stderr, "Usage: %s <readfile1> <writefile2>\n", argv[0] );
    exit ( EXIT_FAILURE );
  }

	in = open_file ( argv[1], "r" );

i am stuck on figuring out how to exactly read in a text file and put every separate word into a list, while ignoring commas.
any ideas? cheers

Your insert head function would need to take a char array, and use strcpy to copy a word.

Also, before you get complicated with reading a file, debug your list code with

Code:

int main ( ) {
  list = createList();
  list = insertList( "hello", list );
  list = insertList( "world", list );
  printList(list);
  deleteList(list);
  return 0;
}

When you've gotten the list functionality sorted, then look at using fgets() and strtok() to read lines, and split into words.