2nd/10_Wiki/Topics/Domain_Programming/Topic_C/C_Syntax.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
c-syntax	C Syntax	Programming_Language	draft	conceptual		main function include stdio C 문법		B	0.86	2026-07-04	2026-07-04			c programming-language w3schools syntax	https://www.w3schools.com/c/c_syntax.php

C Syntax

🎯 한 줄 통찰 (One-line insight)

The compiler is explicitly indifferent to whitespace and line breaks — the source shows the ENTIRE main() body collapsible onto a single line (int main(){printf("Hello World!");return 0;}) and produces identical behavior — meaning C's multi-line formatting convention exists purely for human readability, not because the language requires it, unlike languages where indentation/newlines are syntactically meaningful. [S1]

🧠 핵심 개념 (Core concepts)

• #include <stdio.h> — includes a header enabling input/output functions like printf(); described as something that "almost always appears" in a C program. [S1]
• main() — the special function where program execution begins; code inside its {} is what actually runs. [S1]
• Statement termination — every C statement must end with a semicolon ;. [S1]
• return 0 — ends main() and sends a value back to the operating system; 0 conventionally signals "everything worked." [S1]
• Whitespace insignificance — blank lines and extra spaces are ignored by the compiler; used only to aid human readability. [S1]

📖 세부 내용 (Details)

• Standard multi-line form: #include <stdio.h> int main() { printf("Hello World!"); return 0; }. [S1]
• Equivalent single-line form (compiler behaves identically): int main(){printf("Hello World!");return 0;}. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 줄바꿈/공백은 순전히 가독성 목적: 컴파일러가 여러 줄로 쓰인 코드와 한 줄로 압축한 코드를 동일하게 처리한다는 점이 직접적인 코드 비교로 증명됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 이 챕터의 문장 단위 분해 설명이 이후 모든 C 코드를 읽는 기초 독해 능력의 토대가 된다. [S1]

💻 코드 패턴 (Code patterns)

The canonical C program structure, annotated line by line:

#include <stdio.h>

int main() {
  printf("Hello World!");
  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: C Get Started, C Statements
• 참조 맥락: C 프로그램 구조 설명 — 명령문(Statements) 챕터로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C Syntax — https://www.w3schools.com/c/c_syntax.php

📝 변경 이력 (Change history)

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