---
id: c-statements
title: "C Statements"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["semicolon", "C 명령문"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.84
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["c", "programming-language", "w3schools", "statements"]
raw_sources: ["https://www.w3schools.com/c/c_statements.php"]
applied_in: []
github_commit: ""
---

# [[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):
```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).
