error C2679: binary \'=\' : no operator defined which takes a right-hand operand of type \'struct ListNode\' (or there is no acceptable conversion)
error C2819: type \'ListNode\' does not have an overloaded member \'operator ->\'
see declaration of \'ListNode\'
error C2227: left of \'->llink\' must point to class/struct/union

늘 하던대로 해서 될것 같았는데

이런게 뜨네

헤더파일이 잘못된건가?