---
id: csharp-conditions-elseif
title: "C# The else if Statement"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["else if statement C#", "C# else if 문"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.82
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["csharp", "programming-language", "w3schools", "conditions", "elseif"]
raw_sources: ["https://www.w3schools.com/cs/cs_conditions_elseif.php"]
applied_in: []
github_commit: ""
---

# [[CSharp Conditions ElseIf]]

## 🎯 한 줄 통찰 (One-line insight)
`else if` is not a distinct keyword in C# any more than in C/C++/Java — it's just an `else` block whose body happens to be another `if` statement, which the three-way morning/day/evening example makes visible: each additional `else if` is really nested inside the previous `else`, and the chain only terminates in a plain `else` when every prior condition has failed, evaluated strictly top-to-bottom with short-circuit stopping at the first true condition. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`else if`** — tests a NEW condition only when all prior conditions in the chain were false. [S1]
- **Syntax**: `if (condition1) {...} else if (condition2) {...} else {...}` — any number of `else if` blocks can be chained between the initial `if` and the final `else`. [S1]
- **Top-to-bottom, first-match evaluation** — conditions are checked in order; the first one that's true runs its block and the rest of the chain is skipped entirely. [S1]

## 📖 세부 내용 (Details)
- Three-branch time-of-day example: `int time = 22; if (time < 10) { Console.WriteLine("Good morning."); } else if (time < 20) { Console.WriteLine("Good day."); } else { Console.WriteLine("Good evening."); }` — since `22` is not `< 10` (condition1 false) and not `< 20` (condition2 also false), execution falls through to the final `else`, printing `"Good evening."`. [S1]
- The tutorial notes that if `time` were `14` instead, the program would print `"Good day."` (condition2 would be true). [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **else if는 별도 키워드가 아니라 else의 본문이 if인 구조**: C/C++/Java와 마찬가지로 C#의 else if 체인도 실제로는 else 블록 안에 또 다른 if가 중첩된 구조라는 점이 삼단계 시간대 예제(morning/day/evening)로 다시 확인됨 — 문법적 특수 케이스가 아니라 else+if의 자연스러운 조합. [S1]

## 🛠️ 적용 사례 (Applied in summary)
아침/낮/저녁 인사말을 시간(time) 값에 따라 세 가지로 분기하는 예제가 원문에서 직접 실전 활용 사례로 제시됨. [S1]

## 💻 코드 패턴 (Code patterns)
Chained else-if — first true condition wins, rest skipped (C#):
```csharp
int time = 22;
if (time < 10)
{
    Console.WriteLine("Good morning.");
}
else if (time < 20)
{
    Console.WriteLine("Good day.");
}
else
{
    Console.WriteLine("Good evening.");
}
// Outputs "Good evening."
```

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual
- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
- **신뢰 점수:** 0.82
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[C# Tutorial]]
- **관련 개념:** [[CSharp Conditions Else]], [[CSharp Conditions Shorthand]], [[CSharp Switch]]
- **참조 맥락:** Conditions 섹션 — Short Hand If...Else 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — C# The else if Statement — https://www.w3schools.com/cs/cs_conditions_elseif.php

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