2nd/10_Wiki/Dev/Topic_C/C_Statements.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-statements	C Statements	Programming_Language	draft	conceptual		semicolon C 명령문		B	0.84	2026-07-04	2026-07-04			c programming-language w3schools statements	https://www.w3schools.com/c/c_statements.php

C Statements

🎯 한 줄 통찰 (One-line insight)

Forgetting a single semicolon produces a compiler error that points to the WRONG line — the source's own example shows a missing ; after one printf() call raising error: expected ';' before 'return', meaning the compiler flags the token immediately AFTER the missing semicolon rather than the actual offending line, a common beginner confusion worth knowing in advance. [S1]

🧠 핵심 개념 (Core concepts)

• Statement — one instruction in a C program; the building block of all C code. [S1]
• Mandatory semicolon termination — every statement must end with ;; omitting it causes a compile-time error. [S1]
• Sequential execution — multiple statements in a program execute strictly in the order they are written, one at a time. [S1]

📖 세부 내용 (Details)

• Single statement: printf("Hello World!");. [S1]
• Missing-semicolon error demonstration: printf("Hello World!") (no trailing ;) produces error: expected ';' before 'return' — the error references the NEXT statement, not the line actually missing the semicolon. [S1]
• Sequential multi-statement execution: printf("Hello World!"); printf("Have a good day!"); return 0; — runs top to bottom, printing "Hello World!" then "Have a good day!" before ending. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 에러 메시지의 위치 오프셋: 세미콜론이 누락된 실제 줄이 아니라 그 다음 토큰(예: return)을 기준으로 에러가 보고된다는 점이 실전 디버깅 시 혼동을 일으킬 수 있다고 경고됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 세미콜론 누락 에러의 위치가 실제 원인과 다르다는 점을 미리 알아두면 실전 디버깅 시간을 단축할 수 있다. [S1]

💻 코드 패턴 (Code patterns)

Three statements executing sequentially in source order (C):

printf("Hello World!");
printf("Have a good day!");
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: 0.84
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: C Tutorial
• 관련 개념: C Syntax, C Output
• 참조 맥락: 명령문과 세미콜론 규칙 — 출력(Output) 챕터로 이어짐.

📚 출처 (Sources)

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

📝 변경 이력 (Change history)

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