dost

du4/a_train.c

@@ -3,38 +3,26 @@
 #include <string.h>
 #include "a_train.h"
 
-/**
- * Prida vozen na koniec vlaku.
- */
 struct car* add_car(struct car* first, const char* target) {
-    // vytvorenie noveho vozna
     struct car* newcar = calloc(1, sizeof(struct car));
     if (newcar == NULL) {
-        return first; // ak zlyha alokacia, vrat povodny zoznam
+        return first;
     }
 
     strcpy(newcar->value, target);
     newcar->next = NULL;
 
-    // ak je vlak prazdny
     if (first == NULL) {
         return newcar;
     }
 
-    // najdi posledny vozen
     struct car* this = first;
     while (this->next != NULL) {
         this = this->next;
     }
-
-    // pripoj novy vozen
     this->next = newcar;
     return first;
 }
-
-/**
- * Vypise vsetky vozne vo vlaku.
- */
 void print_train(struct car* first) {
     struct car* this = first;
     while (this != NULL) {
@@ -42,40 +30,26 @@ void print_train(struct car* first) {
         this = this->next;
     }
 }
-
-/**
- * Zrusenie vsetkych voznov vo vlaku.
- */
 void cancel_train(struct car* first) {
     if (first == NULL) return;
-
-    // rekurzivne uvolnenie
     cancel_train(first->next);
     free(first);
 }
-
-/**
- * Vyradenie vsetkych voznov, ktorych cielova stanica je target.
- */
 struct car* clear_train(struct car* first, const char* target) {
     struct car* current = first;
     struct car* prev = NULL;
 
     while (current != NULL) {
         if (strcmp(current->value, target) == 0) {
-            // treba zmazat tento vozen
             struct car* to_delete = current;
             if (prev == NULL) {
-                // mazeme prvy prvok
                 first = current->next;
             } else {
-                // mazeme stredny alebo posledny prvok
                 prev->next = current->next;
             }
             current = current->next;
             free(to_delete);
         } else {
-            // presun dalej
             prev = current;
             current = current->next;
         }