2nd/10_Wiki/Dev/Topic_CPP/CPP_Debugging.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-debugging	C++ Debugging	Programming_Language	draft	conceptual		print debugging breakpoints debugging vs exception handling C++ 디버깅		B	0.84	2026-07-04	2026-07-04			cpp programming-language w3schools debugging	https://www.w3schools.com/cpp/cpp_debugging.asp

CPP Debugging

🎯 한 줄 통찰 (One-line insight)

The closing distinction ("debugging is about finding/fixing errors DURING DEVELOPMENT; exception handling is dealing with errors WHILE THE PROGRAM RUNS") is IDENTICAL to C's Debugging chapter's conclusion — except in C++, "exception handling" now refers to a REAL language feature (try/catch) rather than C's manual NULL-checking workarounds, meaning the conceptual division between the two development-vs-runtime phases stays the same across languages, but the runtime-side tool it points to is genuinely more powerful in C++. [S1]

🧠 핵심 개념 (Core concepts)

• Print debugging — using cout to trace how far execution gets before something goes wrong. [S1]
• Checking variable values — printing intermediate results to catch LOGIC errors, not just crashes. [S1]
• IDE debuggers — breakpoints, line-by-line stepping, variable-watching; recommended as a step up once comfortable with print debugging. [S1]
• Reading error messages literally — the compiler states exactly what's wrong and where. [S1]
• Debugging vs. exception handling — debugging finds/fixes mistakes DURING DEVELOPMENT; exception handling responds to problems WHILE THE PROGRAM RUNS — the same C-established distinction, but now backed by C++'s real try/catch mechanism instead of C's manual workarounds. [S1]

📖 세부 내용 (Details)

• Print debugging locating a crash point: cout << "Before division\n"; int z = x / y; // crashes cout << "After division\n"; // never runs. [S1]
• Logic-error detection via variable printing: int result = x - y; cout << "Result: " << result << "\n"; // expected 15, got 5 — wrong operator used. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 디버깅과 예외 처리의 구분은 C와 동일하지만 예외 처리 자체는 더 강력함: 개발 중 디버깅 vs 실행 중 에러 대응이라는 구분은 C와 같지만, C++에서는 그 "실행 중 대응" 수단이 진짜 언어 차원의 try/catch라는 점이 C의 수동적 우회책과 대비됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — cout으로 코드 실행 지점을 추적해 크래시 위치를 찾는 print debugging이 실전에서 가장 먼저 시도하는 디버깅 기법으로 권장됨. [S1]

💻 코드 패턴 (Code patterns)

Print debugging to locate exactly where a program crashes (C++):

int x = 10;
int y = 0;
cout << "Before division\n"; // Debug output
int z = x / y; // Crashes!
cout << "After division\n"; // Never runs — crash located

✅ 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: CPP Input Validation, CPP Exceptions, CPP Files
• 참조 맥락: 에러 및 디버깅 섹션 마지막 — 파일 입출력(Files) 섹션으로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C++ Debugging — https://www.w3schools.com/cpp/cpp_debugging.asp

📝 변경 이력 (Change history)

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