delete

cv5/a_train.c

@@ -32,24 +32,16 @@ void print_train(struct car* first) {
 }
 
 void cancel_train(struct car* first) {   
-    struct car* this = first;
     if(first == NULL){
         exit(0);
     }
     if(this->next == NULL){
-       this = first->next;
+       struct car* this = first;
-       free(first);
+       first = first->next;
-       this = NULL;
+       free(this);
+       first = NULL;
     }
     else{    
-        /*struct car* prev = first;
-        while(prev->next->next != NULL){
-            prev = prev->next;
-        }
-        this = prev->next;
-        prev->next = NULL;
-        free(this);*/
-    
         cancel_train(first->next);
         free(first);
     }