CPP Module 04, 05

CPP Module 4, 5

 

추상클래스 Abstract Class

https://docs.microsoft.com/ko-kr/cpp/cpp/abstract-classes-cpp?view=msvc-160

 

Exception

https://egg-money.tistory.com/205

https://en.cppreference.com/w/cpp/error/exception/what

 

파일 쓰기(ofstream, ios::out, ios::app)

https://m.blog.naver.com/jodi999/221051811891

https://wiserloner.tistory.com/450

 

ASCII Tree

https://www.asciiart.eu/holiday-and-events/christmas/trees