#include "stdafx.h"
#include "seznam.h"

void listShow(listDescr *list)
{
  item *temp;
  temp=list->first;
  if (temp == NULL)
    puts("List Empty");
  else
  {
    printf("\nFirst: %08X\n", temp);    // show address of first
    for(; temp; temp = temp->next)
      printf("Count: %3d, addr: %08x, next: %08x, text: %s\n", 
        temp->count, temp, temp->next, temp->word);  // addresses and data
  }
}


bool listClear(listDescr *list)
{
  if (list->first == NULL)
    return false;

  while(list->first)
  {
    item *temp = list->first->next;
    free(list->first);
    list->first = temp;
  }
  return true;
}

bool listAdd(listDescr *list, char *txt)
{
  item *temp;

  for(temp = list->first; temp; temp = temp->next)    // iterace for all items
  {
    if (strcmp(temp->word, txt) == 0)     // identical ?
    {
      temp->count++;                      // inkrement counter
      return true;                        // end of function
    }
  }

  if (NULL == (temp = (item *)malloc(sizeof(item)+strlen(txt)+1)))
    return false;                         // cannot allocate heap memory

  temp->word=((char *)temp)+sizeof(item);

  strcpy(temp->word, txt);                // copy text
  temp->count = 1;                        // default count
  temp->next = list->first;               // next of this new is previously first

  list->first = temp;                     // first will be this newest
  return true;
}

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