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Antigravity Agent e9cbf23ab5 docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

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- 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리.
- Topic_Programming 최종 문서 수: 2784 → 3985.

2026-07-05 00:39:13 +09:00

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title

CPP User Input

🎯 한 줄 통찰 (One-line insight)

cin and cout form a deliberately symmetric pair — the source explicitly pairs their pronunciations ("see-out"/"see-in") and their operators (<< insertion / >> extraction) as mirror images of each other, meaning learning cout << from the Output chapter directly transfers to cin >> here: same object-and-operator pattern, just reversed in data direction and operator angle. [S1]

🧠 핵심 개념 (Core concepts)

cin — a predefined variable that reads keyboard input, using the EXTRACTION operator >> (mirror of cout's insertion operator <<). [S1]
Both belong to <iostream> — cin and cout are both part of the same standard input/output streams library. [S1]
Building a simple calculator — chaining two cin >> reads plus arithmetic demonstrates a complete interactive program. [S1]

📖 세부 내용 (Details)

Basic numeric input: int x; cout << "Type a number: "; cin >> x; cout << "Your number is: " << x;. [S1]
A two-number calculator: int x, y, sum; cin >> x; cin >> y; sum = x + y; cout << "Sum is: " << sum;. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

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

🛠️ 적용 사례 (Applied in summary)

두 숫자를 입력받아 합을 계산하는 간단한 계산기 프로그램이 원문에서 직접 실전 활용 사례로 제시됨. [S1]

💻 코드 패턴 (Code patterns)

A simple calculator built from two cin reads and an arithmetic sum (C++):

int x, y, sum;
cout << "Type a number: ";
cin >> x;
cout << "Type another number: ";
cin >> y;
sum = x + y;
cout << "Sum is: " << sum;

✅ 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 Scope, CPP Date, CPP Strings Input
참조 맥락: 사용자 입력 — 날짜와 시간(Date) 챕터로 이어짐.

📚 출처 (Sources)

[S1] W3Schools — C++ User Input — https://www.w3schools.com/cpp/cpp_user_input.asp

📝 변경 이력 (Change history)

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

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