---
id: cpp-output
title: "C++ Output (Print Text)"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["cout insertion operator", "C++ 출력"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.84
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["cpp", "programming-language", "w3schools", "output", "cout"]
raw_sources: ["https://www.w3schools.com/cpp/cpp_output.asp"]
applied_in: []
github_commit: ""
---

# [[CPP Output (Print Text)]]

## 🎯 한 줄 통찰 (One-line insight)
`cout` never inserts a newline automatically — exactly the same behavior as C's `printf()` — meaning C++'s I/O model, despite replacing `printf()` with an object-and-operator syntax (`cout <<`), preserves the identical "no automatic line breaks" limitation, so multiple `cout` calls still concatenate onto one line unless the programmer explicitly adds a newline character. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`cout` + `<<`** — the object and insertion operator used to print text; text must be wrapped in double quotes. [S1]
- **No automatic newline** — multiple `cout` statements concatenate output onto ONE line, just like C's `printf()`. [S1]
- **Multiple `cout` calls allowed** — as many as needed in one program. [S1]

## 📖 세부 내용 (Details)
- Basic print: `cout << "Hello World!";`. [S1]
- Newline-less concatenation across two calls: `cout << "Hello World!"; cout << "I am learning C++"; // both render on one line`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **cout도 printf()처럼 줄바꿈을 자동 삽입하지 않음**: 여러 cout 호출 결과가 모두 한 줄에 이어져 출력된다는 점이 C의 printf() 동작과 동일함이 확인됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 다음 챕터(New Lines)에서 \n과 endl로 줄바꿈을 명시적으로 추가하는 방법으로 이어진다. [S1]

## 💻 코드 패턴 (Code patterns)
Two cout calls concatenating onto one line with no automatic newline (C++):
```cpp
#include <iostream>
using namespace std;
int main() {
  cout << "Hello World!";
  cout << "I am learning C++";
  return 0;
}
```

## ✅ 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 Comments]], [[CPP Output Numbers]], [[CPP New Lines]]
- **참조 맥락:** 텍스트 출력 — 숫자 출력(Output Numbers) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — C++ Output (Print Text) — https://www.w3schools.com/cpp/cpp_output.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "C++ Output (Print Text)" page (Astra wiki-curation, P-Reinforce v3.1 format).
