add

cv5/a_train.c

@@ -7,9 +7,13 @@
 struct car* add_car(struct car* first,const char* target) {
     struct car* newcar = calloc(1, sizeof(struct car));
     strcpy(newcar->value, target);
+   
     if(first == NULL){
         return newcar;
     }
+    if(first->next == NULL){
+        first->next = newcar;
+    }
     struct car *this = first;
     while(this->next != NULL){
         this = this->next;         
@@ -36,6 +40,7 @@ void cancel_train(struct car* first) {
         exit(0);
     }
     if(first->next == NULL){
+       printf("Tam je null");
        struct car* this = first;
        first = first->next;
        free(this);