clear

cv5/a_train.c

@@ -69,6 +69,7 @@ struct car* clear_train(struct car* first, const char* target) {
                 struct car* third = prev->next->next;
                 free(prev->next);
                 prev->next = third; 
+                first->next = NULL;
                 return first;
             }
             prev = prev->next;
@@ -76,7 +77,7 @@ struct car* clear_train(struct car* first, const char* target) {
         int x = strcmp(prev->next->value, target);
         if(x == 0){
             free(prev->next);
-            prev->next->next = NULL;
+            prev->next = NULL;
             return first;
  
         }