---
id: cpp-comments
title: "C++ Comments"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["single-line comments", "multi-line comments", "C++ 주석"]
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: ["cpp", "programming-language", "w3schools", "comments"]
raw_sources: ["https://www.w3schools.com/cpp/cpp_comments.asp"]
applied_in: []
github_commit: ""
---

# [[CPP Comments]]

## 🎯 한 줄 통찰 (One-line insight)
Unlike the C tutorial, which highlighted a historical constraint (single-line `//` comments only became standard in C99), the C++ chapter presents both `//` and `/* */` as equally native from the start with no such caveat — reflecting that C++ never carried C's pre-1999 single-line-comment limitation, since C++ has supported `//` since its earliest standardization. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Single-line comments (`//`)** — text from `//` to end of line is ignored by the compiler. [S1]
- **Multi-line comments (`/* */`)** — text between the markers is ignored, regardless of line count. [S1]
- **Stylistic convention** — `//` for short comments, `/* */` for longer ones; entirely up to the developer. [S1]

## 📖 세부 내용 (Details)
- Single-line comment before code: `// This is a comment cout << "Hello World!";`. [S1]
- Single-line comment at end of a line: `cout << "Hello World!"; // This is a comment`. [S1]
- Multi-line comment: `/* The code below will print the words Hello World! to the screen, and it is amazing */ cout << "Hello World!";`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 짧은 주석에는 //, 긴 설명에는 /* */를 쓰는 관행이 C 챕터와 동일하게 권장됨. [S1]

## 💻 코드 패턴 (Code patterns)
Single-line comment used to explain a line of code (C++):
```cpp
cout << "Hello World!"; // This is a comment
```

## ✅ 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:** [[CPP Statements]], [[CPP Output]]
- **참조 맥락:** 주석 문법 — 출력(Output) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — C++ Comments — https://www.w3schools.com/cpp/cpp_comments.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "C++ Comments" page (Astra wiki-curation, P-Reinforce v3.1 format).