2nd/10_Wiki/Dev/Topic_C/C_Memory_Address.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-memory-address	C Memory Address	Programming_Language	draft	conceptual		reference operator %p specifier C 메모리 주소		B	0.86	2026-07-04	2026-07-04			c programming-language w3schools memory pointers	https://www.w3schools.com/c/c_memory_address.php

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]
• %p format 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).