2nd/10_Wiki/Dev/Topic_CPP/CPP_Arrays_Multi.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
cpp-arrays-multi	C++ Multi-Dimensional Arrays	Programming_Language	draft	conceptual		2D array 3D array battleship game C++ 다차원 배열		B	0.86	2026-07-04	2026-07-04			cpp programming-language w3schools arrays multidimensional	https://www.w3schools.com/cpp/cpp_arrays_multi.asp

CPP Multi-Dimensional Arrays

🎯 한 줄 통찰 (One-line insight)

The Battleship mini-game demonstrates that a 2D bool array can serve as a complete GAME STATE representation — ship positions stored as true/false grid cells, hit-tracking done by simply flipping a cell to false after a hit — showing multi-dimensional arrays aren't just abstract grid storage but a natural fit for representing real interactive state that changes over a program's runtime. [S1]

🧠 핵심 개념 (Core concepts)

• Multi-dimensional array — "an array of arrays"; each additional [] in the declaration adds one more dimension. [S1]
• 2D array (type name[rows][cols]) — declared with two bracket pairs; initialized with nested array literals ({ {...}, {...} }). [S1]
• Dual-index access — letters[row][col] addresses a specific cell; zero-based. [S1]
• One nested loop per dimension — a 2D array needs 2 nested loops; a 3D array needs 3. [S1]
• Grids as game state — a bool 2D array can model ship positions in a Battleship-style game; a hit is registered by flipping the cell's value to false. [S1]

📖 세부 내용 (Details)

• Creating and accessing a 2D array: string letters[2][4] = { {"A","B","C","D"}, {"E","F","G","H"} }; cout << letters[0][2]; // "C". [S1]
• A 3D array declaration and full triple-nested loop: string letters[2][2][2] = {...}; for (i...) { for (j...) { for (k...) { cout << letters[i][j][k]; } } }. [S1]
• Battleship game using a 2D bool array as ship-position state: bool ships[4][4] = { {0,1,1,0}, {0,0,0,0}, {0,0,1,0}, {0,0,1,0} }; if (ships[row][column]) { ships[row][column] = 0; hits++; }. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources). C 챕터와 동일한 다차원 배열 구조/접근 방식이 확인됨.

🛠️ 적용 사례 (Applied in summary)

4x4 격자에 배 위치를 bool 값으로 저장하고, 명중 시 해당 칸을 0으로 바꾸는 배틀십 미니게임이 원문에서 직접 실전 활용 사례로 제시됨(다차원 배열이 실제 게임 상태를 표현하는 방법). [S1]

💻 코드 패턴 (Code patterns)

A 2D bool array modeling ship positions, with a hit flipping the cell to false (C++):

bool ships[4][4] = {
  { 0, 1, 1, 0 },
  { 0, 0, 0, 0 },
  { 0, 0, 1, 0 },
  { 0, 0, 1, 0 }
};
if (ships[row][column]) {
  ships[row][column] = 0; // register the hit
  hits++;
}

✅ 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 Arrays Loop, CPP For Loop Nested, CPP Arrays Omit
• 참조 맥락: 다차원 배열 — 배열 크기 생략(Arrays Omit) 챕터로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C++ Multi-Dimensional Arrays — https://www.w3schools.com/cpp/cpp_arrays_multi.asp

📝 변경 이력 (Change history)

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