icable

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

Code:

#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;
}

>>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.

if (ptr->word==str)

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