https://www.learncpp.com/cpp-tutorial/introduction-to-objects-and-variables/
value는 메모리에 저장되는 single piece of data
object는 이 메모리에 접근하기위한 간접적 매개체
Instantiation is a fancy word that means the object will be created and assigned a memory address.
ojbect가 생성되고 메모리주소가 할당되는 것을 뜻한다
instance instantiated object를 뜻하는 말
Q4 What is an identifier?
An identifier is the name that a variable is accessed by.
**** 단어장
aforementioned : 앞서 언급한
manipulate : 조종하다