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3.2 KiB
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 | |||||||||
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| c-memory-address | C Memory Address | Programming_Language | draft | conceptual |
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B | 0.86 | 2026-07-04 | 2026-07-04 |
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C Memory Address
🎯 한 줄 통찰 (One-line insight)
&myAge isn't just a debugging curiosity for printing hex addresses — the source explicitly identifies it as a "pointer" in its own right, meaning the concept of "getting a memory address" and "creating a pointer value" are the SAME operation viewed from two angles, setting up the entire next chapter's pointer syntax as a direct extension of this one operator (&). [S1]
🧠 핵심 개념 (Core concepts)
- Memory address — the physical location where a variable's value is actually stored on the computer. [S1]
&(reference/address-of operator) — retrieves a variable's memory address. [S1]%pformat specifier — the correct printf specifier for printing a memory address/pointer value (not%d). [S1]- Hexadecimal representation — memory addresses print in
0x...form; the exact value varies by machine/run and isn't meant to be predicted. [S1] - Why pointers matter — they let a program manipulate memory directly, reducing code size and improving performance — described as one of the things that distinguishes C from languages like Python and Java. [S1]
📖 세부 내용 (Details)
- Getting and printing a variable's address:
int myAge = 43; printf("%p", &myAge); // Outputs 0x7ffe5367e044. [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 — 이 챕터의 & 연산자 개념이 다음 챕터(Pointers)에서 실제 포인터 변수 선언의 기초로 그대로 이어진다. [S1]
💻 코드 패턴 (Code patterns)
Getting a variable's memory address with the reference operator (C):
int myAge = 43;
printf("%p", &myAge); // Outputs 0x7ffe5367e044
✅ 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 Typedef, C Pointers
- 참조 맥락: 포인터/메모리 섹션 첫 챕터 — 포인터(Pointers) 챕터로 이어짐.
📚 출처 (Sources)
- [S1] W3Schools — C Memory Address — https://www.w3schools.com/c/c_memory_address.php
📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "C Memory Address" page (Astra wiki-curation, P-Reinforce v3.1 format).