clear

cv5/a_train.c

@@ -73,17 +73,14 @@ struct car* clear_train(struct car* first, const char* target) {
                 free(this);
                 return first;
             }
-            else{
+            else if(this->next->next == NULL){
                 while(tmp->next != NULL){
                     prev = tmp;
                     tmp = tmp->next;
                 }
                 free(tmp);
-                prev->next = NULL;
+                prev->next = NULL;            
-            
+            }
-             }
-            
-     
         }
         this = this->next;
    }