2nd/10_Wiki/Dev/Topic_C/C_Operators_Assignment.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-operators-assignment	C Assignment Operators	Programming_Language	draft	conceptual		+= -= *= compound assignment C 대입 연산자		B	0.84	2026-07-04	2026-07-04			c programming-language w3schools operators assignment	https://www.w3schools.com/c/c_operators_assignment.php

C Assignment Operators

🎯 한 줄 통찰 (One-line insight)

Every compound assignment operator — including the bitwise ones (&=, |=, ^=, >>=, <<=) covered later in the Bitwise chapter — follows the identical expansion pattern x OP= y ≡ x = x OP y, meaning learning this ONE rule (rather than memorizing 11 separate operators) is enough to understand every assignment shorthand in the language, arithmetic or bitwise alike. [S1]

🧠 핵심 개념 (Core concepts)

• = — basic assignment. [S1]
• Arithmetic compound operators — +=, -=, *=, /=, %=, each expanding to x = x <op> value. [S1]
• Bitwise compound operators — &=, |=, ^=, >>=, <<=, following the SAME expansion pattern as the arithmetic ones. [S1]
• Purpose — pure shorthand for readability/brevity; functionally identical to the fully-spelled-out form. [S1]

📖 세부 내용 (Details)

• Full expansion table: x += 3 ≡ x = x + 3; x -= 3 ≡ x = x - 3; x *= 3 ≡ x = x * 3; x /= 3 ≡ x = x / 3; x %= 3 ≡ x = x % 3; x &= 3 ≡ x = x & 3; x |= 3 ≡ x = x | 3; x ^= 3 ≡ x = x ^ 3; x >>= 3 ≡ x = x >> 3; x <<= 3 ≡ x = x << 3. [S1]
• Real-life savings tracker: int savings = 100; savings += 50; // add 50 to savings printf("Total savings: %d\n", savings);. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).

🛠️ 적용 사례 (Applied in summary)

저축액에 50을 더하는 savings += 50 예제가 원문에서 직접 실전 활용 사례로 제시됨(계좌 잔액 누적 갱신). [S1]

💻 코드 패턴 (Code patterns)

Tracking a running total using the compound addition-assignment operator (C):

int savings = 100;
savings += 50; // add 50 to savings
printf("Total savings: %d\n", savings);

✅ 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 Operators Arithmetic, C Operators Comparison, C Bitwise Operators
• 참조 맥락: 대입 연산자 — 비교 연산자(Operators Comparison) 챕터로 이어짐, 비트 대입 연산자는 Bitwise Operators 챕터와 연결.

📚 출처 (Sources)

• [S1] W3Schools — C Assignment Operators — https://www.w3schools.com/c/c_operators_assignment.php

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "C Assignment Operators" page (Astra wiki-curation, P-Reinforce v3.1 format).