2nd/10_Wiki/Topics/Topic_Programming/Topic_CPP/CPP_Encapsulation.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
cpp-encapsulation	C++ Encapsulation	Programming_Language	draft	conceptual		getter setter private attribute access C++ 캡슐화		B	0.86	2026-07-04	2026-07-04			cpp programming-language w3schools oop encapsulation	https://www.w3schools.com/cpp/cpp_encapsulation.asp

CPP Encapsulation

🎯 한 줄 통찰 (One-line insight)

Encapsulation is the concrete APPLICATION of the previous chapter's abstract advice — "declare attributes private as often as you can" becomes actionable once you pair each private attribute with a public getter/setter method, meaning encapsulation isn't a separate new technique so much as the standard PATTERN for actually using private without making the data completely unreachable. [S1]

🧠 핵심 개념 (Core concepts)

• Encapsulation — hiding "sensitive" data by declaring class attributes private, then providing public GET and SET methods for controlled access. [S1]
• Setter method — a public method that ASSIGNS a value to a private attribute (void setSalary(int s) { salary = s; }). [S1]
• Getter method — a public method that RETURNS a private attribute's value (int getSalary() { return salary; }). [S1]
• Real-life analogy — an employee's salary is private (they can't change it directly); only the manager (a trusted method) can update or share it. [S1]
• Why encapsulate — better control of data (change one part without affecting others), increased data security. [S1]

📖 세부 내용 (Details)

• A private attribute accessed exclusively through a getter/setter pair: class Employee { private: int salary; public: void setSalary(int s) { salary = s; } int getSalary() { return salary; } }; Employee myObj; myObj.setSalary(50000); cout << myObj.getSalary();. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).

🛠️ 적용 사례 (Applied in summary)

직원의 급여(salary)를 private으로 숨기고 setSalary()/getSalary()로만 접근하도록 하는 Employee 클래스 예제가 캡슐화의 대표 실전 활용 사례로 원문에 직접 제시됨. [S1]

💻 코드 패턴 (Code patterns)

A private attribute accessed only through public getter/setter methods (C++):

class Employee {
private:
  int salary; // hidden
public:
  void setSalary(int s) { salary = s; }
  int getSalary() { return salary; }
};
int main() {
  Employee myObj;
  myObj.setSalary(50000);
  cout << myObj.getSalary();
  return 0;
}

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.86
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: C++ Tutorial
• 관련 개념: CPP Access Specifiers, CPP Inheritance
• 참조 맥락: 접근 지정자 및 캡슐화 섹션 마지막 — 상속(Inheritance) 섹션으로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C++ Encapsulation — https://www.w3schools.com/cpp/cpp_encapsulation.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "C++ Encapsulation" page (Astra wiki-curation, P-Reinforce v3.1 format).