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10_Wiki/Topic_Programming/Topic_CSharp/CSharp_Strings_Chars.md

@@ -0,0 +1,72 @@
+---
+id: csharp-strings-chars
+title: "C# Special Characters"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["escape characters C#", "\\n \\t \\\" C#", "C# 특수 문자"]
+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: ["csharp", "programming-language", "w3schools", "strings", "escape-characters"]
+raw_sources: ["https://www.w3schools.com/cs/cs_strings_chars.php"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CSharp Special Characters]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+Every escape sequence in this chapter (`\'`, `\"`, `\\`, `\n`, `\t`, `\b`) is character-for-character identical to C and C++'s escape sequences, making this the third "zero divergence" chapter in the C# series so far (after Comments and Operators) — the pattern across all three is that C#'s LEXICAL-LEVEL syntax (tokens, literals, comments, escapes) stays fully compatible with the C family, while its STRUCTURAL rules (mandatory classes, `.Length` as property not method, `Convert.To*`) are where the real divergence happens. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Why escapes are needed** — a double quote inside a double-quoted string literal breaks parsing; C# needs a way to include one. [S1]
+- **`\'`** — inserts a single quote. [S1]
+- **`\"`** — inserts a double quote. [S1]
+- **`\\`** — inserts a single backslash. [S1]
+- **`\n`** — new line. [S1]
+- **`\t`** — tab. [S1]
+- **`\b`** — backspace. [S1]
+
+## 📖 세부 내용 (Details)
+- Broken (unescaped) example shown deliberately as an error case: `string txt = "We are the so-called "Vikings" from the north.";` — the tutorial shows this fails, then fixes it with `\"`. [S1]
+- Fixed: `string txt = "We are the so-called \"Vikings\" from the north.";`. [S1]
+- Single quote escape: `string txt = "It\'s alright.";`. [S1]
+- Backslash escape: `string txt = "The character \\ is called backslash.";`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **이스케이프 시퀀스가 C/C++와 완전히 동일**: `\' \" \\ \n \t \b` 전부 C/C++와 기호·의미가 동일하다는 점이 확인됨 — Comments, Operators에 이은 세 번째 "완전 동일" 챕터. 이는 C#의 어휘 수준 문법(토큰/리터럴/주석/이스케이프)이 C 계열과 완전히 호환되는 반면, 구조적 규칙(클래스 강제, .Length 프로퍼티, Convert.To* 등)에서만 실질적으로 갈라진다는 패턴을 보여줌. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 큰따옴표/작은따옴표/백슬래시를 이스케이프해 문자열에 포함시키는 예제가 원문에서 제시됨. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Escape sequences — identical to C/C++ (C#):
+```csharp
+string txt1 = "We are the so-called \"Vikings\" from the north.";
+string txt2 = "It\'s alright.";
+string txt3 = "The character \\ is called backslash.";
+```
+
+## ✅ 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 Strings Access]], [[CSharp Booleans]], [[CPP Strings Esc]]
+- **참조 맥락:** Strings 섹션의 마지막 챕터 — Booleans 섹션으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — C# Special Characters — https://www.w3schools.com/cs/cs_strings_chars.php
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "C# Special Characters" page (Astra wiki-curation, P-Reinforce v3.1 format).