# include <stdio.h>

//
//  Program 11.10, Stephen Kochan, Programming in C.
//
struct entry
{
  int value;
  struct entry *next;
};

int main ( void );
struct entry *findEntry ( struct entry *listPtr, int match );

int main ( void )
{
  struct entry n1, n2, n3;
  struct entry *listPtr, *listStart = &n1;
  int search;

  n1.value = 100;
  n1.next = &n2;

  n2.value = 200;
  n2.next = &n3;

  n3.value = 300;
  n3.next = 0;

  printf ( "Enter value to locate: " );
  scanf ( "%i", &search );

  listPtr = findEntry ( listStart, search );

  if ( listPtr != ( struct entry * ) 0 )
  {
    printf ( "Found %i.\n", listPtr->value );
  }
  else
  {
    printf ( "Not found.\n" );
  }

  return 0;
}

struct entry *findEntry ( struct entry *listPtr, int match )
{
  while ( listPtr != ( struct entry * ) 0 )
  {
    if ( listPtr->value == match )
    {
      return listPtr;
    }
    else
    {
      listPtr = listPtr->next;
    }
  }

  return ( struct entry * ) 0;
}