icable

does anyone tell me what's wrong with the program?

Code:

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

struct llist                     
{
                   
  char word[20];               
  struct llist *next;           
};
typedef struct llist node;     
typedef node *llink;
 
llink insertnode(llink head,llink ptr,char str[20])
{
        llink newnode;
        newnode = (llink)malloc(sizeof(node));
                if(!newnode)
                        return NULL;
                newnode->word=str;
                newnode->next=NULL;
                newnode->next=ptr->next;
                ptr->next=newnode;
                return head;
}

llink deletenode(llink head,llink ptr)
{
        llink previous;
        previous=head;
        while(previous->next!=ptr)
                previous=previous->next;
        previous->next=ptr->next;
        free(ptr);
                return head;
}
llink findnode(llink head,char str[20])
{
        llink ptr;
        ptr=head;
        do
        {
                if (ptr->word==str)
                        return ptr;
                ptr->next;
        }while (head!=ptr && head!=head->next);
        return NULL;
}
int main(void)
{
 
  FILE *infile  = fopen("wap.txt","r");
  FILE *outfile = fopen("wordlist.txt","w");
  FILE *infile1 = fopen("wordlist.txt","r");
  FILE *outfile1 = fopen("wordlist1.txt","w");
 
  llink head;                   
  llink ptr;
   
  int i=0,count=0;

  if ( infile != NULL && outfile != NULL )
  {
      int terminate = 0;
      for ( ;; )
      {
        int ch = fgetc(infile);
        if ( ch == EOF )
        {
            break;
        }
        if ( isalpha(ch) )
        {
            fputc(ch, outfile);
            terminate = 1; /* okay to add newline on next space */
        }
        else if ( isspace(ch) && terminate )
        {
            fputc('\n', outfile);
            terminate = 0;
        }
      }
     
      fclose(infile);
      fclose(outfile);
  head = ( llink ) malloc(sizeof(node));
  head->next = NULL;           
  ptr = head;   
  while(!feof(infile1)) 
  {
     
      fscanf(infile1,"%s",ptr->word);   
      ptr->next = ( llink ) malloc(sizeof(node));
      ptr->next->next = NULL; 
      ptr = ptr->next;
          count++;
  }
 
  ptr = head;                 
  while(i<count-1)
  {
    fprintf(outfile1,"%s\n",ptr->word);
    ptr = ptr->next;
        i++;
  }
 
  fclose(infile1);
  fclose(outfile1);
 
  }
  return 0;
}

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>>anyone tell me what's wrong with the program?
Be a bit more descriptive.. pleeeeaassee!
What do you think is wrong with it, what are the symptoms etc.

Quote:

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if (ptr->word==str)

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You can't compare strings this way unless it's technically the same string, which I doubt it will be in your program. Use strcmp(char*, char*). It returns 0 if both strings are equal.

Also, you should check if fopen() succeeds or fails before doing anything.
Another thing, is it really good to have both a write-file and a read-file pointer to the same file at the same time? I highly doubt it!

thx for your help!!!!
now i know how to do