diff --git a/cv4/a_train.c b/cv4/a_train.c
index f530fbc..5e59cc4 100644
--- a/cv4/a_train.c
+++ b/cv4/a_train.c
@@ -1,8 +1,34 @@
 #include "a_train.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
-struct car* add_car(struct car* first,const char* target) {
-    return NULL;
+struct car* add_car(struct car* first, const char* target) {
+    // Vytvorenie noveho vozna
+    struct car* new_car = (struct car*)malloc(sizeof(struct car));
+    if (new_car == NULL) {
+        printf("Chyba: Nepodarilo sa alokovať pamäť pre nový vozeň.\n");
+        return first;
+    }
+    
+    // Inicializacia hodnot
+    strncpy(new_car->value, target, SIZE);
+    new_car->next = NULL;
+    
+    // Ak vlak neexistuje, novy vozen sa stane prvym
+    if (first == NULL) {
+        return new_car;
+    }
+    
+    // Najdenie posledneho vozna
+    struct car* temp = first;
+    while (temp->next != NULL) {
+        temp = temp->next;
+    }
+    
+    // Pridanie noveho vozna na koniec
+    temp->next = new_car;
+    return first;
 }
 
 void print_train(struct car* first) {