---
id: cpp-pointers
title: "C++ Pointers"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["pointer declaration", "preferred syntax style", "C++ 포인터"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.86
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["cpp", "programming-language", "w3schools", "pointers"]
raw_sources: ["https://www.w3schools.com/cpp/cpp_pointers.asp"]
applied_in: []
github_commit: ""
---

# [[CPP Pointers]]

## 🎯 한 줄 통찰 (One-line insight)
The source explicitly ranks THREE valid pointer-declaration spacing styles (`string* mystring;`, `string *mystring;`, `string * mystring;`) and states the FIRST is "preferred" — a stylistic recommendation C's Pointers chapter never made, meaning C++ style guides have converged on attaching `*` to the TYPE rather than the variable name, even though all three compile identically. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Pointer** — a variable that stores another variable's memory address as its value. [S1]
- **Type-matched declaration** — a pointer's type must match the type it points to (`string* ptr` for a `string`). [S1]
- **Preferred spacing style** — `string* mystring;` (asterisk attached to the type) is explicitly called out as preferred over `string *mystring;` or `string * mystring;`, though all three are equivalent. [S1]

## 📖 세부 내용 (Details)
- Creating a pointer and reading the address it stores: `string food = "Pizza"; string* ptr = &food; cout << ptr; // same address as &food`. [S1]
- Three equivalent but stylistically ranked declarations: `string* mystring; // Preferred string *mystring; string * mystring;`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **선호되는 포인터 선언 스타일이 명시됨**: C 챕터에는 없던 스타일 권고로, string* ptr처럼 별표를 타입에 붙이는 방식이 선호된다는 점이 명확히 제시됨(세 가지 모두 동일하게 작동하지만). [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 별표를 타입에 붙이는 스타일이 실전 C++ 코드 컨벤션에서 권장되는 표기법이다. [S1]

## 💻 코드 패턴 (Code patterns)
Creating a pointer using the preferred declaration style (C++):
```cpp
string food = "Pizza";
string* ptr = &food;   // Preferred style: * attached to the type
cout << ptr << "\n";    // same address as &food
```

## ✅ 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:** [[CPP References Memory]], [[CPP Pointers Dereference]], [[C Pointers]]
- **참조 맥락:** 포인터 기초 — 역참조(Pointers Dereference) 챕터로 이어짐.

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

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