2nd/10_Wiki/Topics/Domain_Programming/Topic_CSharp/CSharp_Conditions.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
csharp-conditions	C# If ... Else	Programming_Language	draft	conceptual		if statement C# C# 조건문		B	0.83	2026-07-04	2026-07-04			csharp programming-language w3schools conditions if	https://www.w3schools.com/cs/cs_conditions.php

CSharp Conditions

🎯 한 줄 통찰 (One-line insight)

The if (condition) { ... } syntax is byte-identical to C/C++/Java, and the chapter's own explicit warning — "if is in lowercase letters; If or IF will generate an error" — is the same case-sensitivity rule already established in the Identifiers chapter, now applied to KEYWORDS rather than variable names, closing the loop on C#'s case-sensitivity being a blanket rule across the entire language (identifiers AND keywords), not just a variable-naming quirk. [S1]

🧠 핵심 개념 (Core concepts)

• Comparison conditions inherited from math — <, <=, >, >=, ==, !=, already covered in the Comparison Operators chapter, are the building blocks of every condition. [S1]
• Four conditional constructs previewed — if (execute if true), else (execute if false), else if (test a new condition if the first was false), switch (many alternative blocks). [S1]
• if syntax: if (condition) { // code } — code inside the braces runs only when condition evaluates to True. [S1]
• Case-sensitivity applies to keywords, not just identifiers — If or IF (capitalized) is a compile error; only lowercase if is valid. [S1]

📖 세부 내용 (Details)

• Literal condition: if (20 > 18) { Console.WriteLine("20 is greater than 18"); }. [S1]
• Variable condition: int x = 20; int y = 18; if (x > y) { Console.WriteLine("x is greater than y"); }. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 대소문자 구분이 키워드에도 적용됨을 명시적으로 확인: Identifiers 챕터에서 변수명의 대소문자 구분(myVar vs myvar)을 배웠는데, 이번 챕터는 if라는 키워드 자체도 대문자로 쓰면(If, IF) 에러가 난다고 명시 — 대소문자 구분이 식별자뿐 아니라 언어 전체(키워드 포함)에 적용되는 규칙임이 확인됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 리터럴 비교(20 > 18)와 변수 비교(x > y) 두 가지 if 예제가 원문에서 제시됨. [S1]

💻 코드 패턴 (Code patterns)

Basic if statement — lowercase if only (C#):

int x = 20;
int y = 18;
if (x > y)
{
    Console.WriteLine("x is greater than y");
}

✅ 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: CSharp Booleans, CSharp Conditions Else, CPP Conditions
• 참조 맥락: Conditions 섹션 — The else Statement 챕터로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C# If ... Else — https://www.w3schools.com/cs/cs_conditions.php

📝 변경 이력 (Change history)

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