docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영. - Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들 (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거. - Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/ Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/ Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이 존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존). - Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/ JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동. - 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리. - Topic_Programming 최종 문서 수: 2784 → 3985.
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+---
+id: cpp-conditions-elseif
+title: "C++ Else If"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["else if chain", "top to bottom evaluation", "C++ else if 문"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.83
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["cpp", "programming-language", "w3schools", "conditions", "else-if"]
+raw_sources: ["https://www.w3schools.com/cpp/cpp_conditions_elseif.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CPP Else If]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The first-match-wins rule (conditions checked top-to-bottom, stopping at the first true match, even if a later condition would also hold) is stated with the exact same wording and the exact same time-of-day example as C's chapter — reconfirming that C++'s `else if` chain evaluation semantics are inherited from C without modification. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`else if`** — tests a new condition only if the preceding condition(s) were false. [S1]
+- **First-match-wins evaluation** — conditions checked top to bottom; the first true condition's block runs, remaining conditions are skipped. [S1]
+- **Boolean-variable chaining** — each condition in the chain can be pre-computed into a descriptively-named bool. [S1]
+
+## 📖 세부 내용 (Details)
+- Time-of-day chain: `int time = 16; if (time < 12) { cout << "Good morning."; } else if (time < 18) { cout << "Good day."; } else { cout << "Good evening."; } // Outputs "Good day."`. [S1]
+- Same chain with named booleans: `bool isMorning = time < 12; bool isDay = time < 18; if (isMorning) {...} else if (isDay) {...} else {...}`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources). C 챕터와 완전히 동일한 우선 매칭 규칙임이 확인됨.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 시간대에 따라 아침/낮/저녁 인사를 구분하는 것이 else if 체인의 대표적인 실전 활용 예시다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Chained else-if conditions evaluated top-to-bottom, stopping at the first match (C++):
+```cpp
+int time = 16;
+if (time < 12) {
+  cout << "Good morning.";
+} else if (time < 18) {
+  cout << "Good day.";
+} else {
+  cout << "Good evening.";
+}
+// Outputs "Good day."
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.83
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[C++ Tutorial]]
+- **관련 개념:** [[CPP Conditions Else]], [[CPP Conditions Shorthand]], [[C Conditions ElseIf]]
+- **참조 맥락:** else if 체인 — 삼항 연산자(Conditions Shorthand) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — C++ Else If — https://www.w3schools.com/cpp/cpp_conditions_elseif.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "C++ Else If" page (Astra wiki-curation, P-Reinforce v3.1 format).