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10_Wiki/Topic_Programming/Topic_CPP/CPP_Booleans_Expressions.md

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+---
+id: cpp-booleans-expressions
+title: "C++ Boolean Expressions"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["comparison result storage", "C++ 불리언 표현식"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.84
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["cpp", "programming-language", "w3schools", "booleans", "boolean-expressions"]
+raw_sources: ["https://www.w3schools.com/cpp/cpp_booleans_expressions.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CPP Boolean Expressions]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The source explicitly frames boolean expressions as "the foundation of decision making in programming" — not just a data-comparison mechanism, but the literal MECHANISM by which a program "decides what to do," directly foreshadowing the entire upcoming Conditions section, which is really just boolean expressions wired into `if`/`else` branches. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Boolean expression** — code that compares values/variables and returns `1` (true) or `0` (false). [S1]
+- **Comparisons work on both literals and variables** — `cout << (x > y);` and `cout << (10 > 9);` behave identically. [S1]
+- **Storing a comparison in a bool variable** — `bool isGreater = x > y;` makes reused/complex conditions more readable. [S1]
+
+## 📖 세부 내용 (Details)
+- Greater-than comparison on variables: `int x = 10; int y = 9; cout << (x > y); // 1`. [S1]
+- Equal-to comparison on a literal: `cout << (10 == 15); // 0`. [S1]
+- Storing a comparison result: `int x = 10; int y = 9; bool isGreater = x > y; cout << isGreater; // 1`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 비교 결과를 bool 변수에 저장해 재사용하는 패턴이 코드 가독성을 높이는 실전 습관으로 권장된다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Storing a comparison's result in a bool variable for readability (C++):
+```cpp
+int x = 10;
+int y = 9;
+bool isGreater = x > y;
+cout << isGreater; // returns 1 (true)
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.84
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[C++ Tutorial]]
+- **관련 개념:** [[CPP Booleans]], [[CPP Booleans RealLife]], [[C Booleans]]
+- **참조 맥락:** 불리언 표현식 — 불리언 실전 예제(Booleans RealLife) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — C++ Boolean Expressions — https://www.w3schools.com/cpp/cpp_booleans_expressions.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "C++ Boolean Expressions" page (Astra wiki-curation, P-Reinforce v3.1 format).