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break statement

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Flow control
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条件付き実行文
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Conditional execution statements
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Iteration statements
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文をジャンプします
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Jump statements
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continue statement
break statement
機能します
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Functions
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関数の宣言
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noexcept指定子 (C++11)
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Exceptions
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decltype specifier (C++11)
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typedef declaration
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Casts
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Classes
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Class-specific function properties
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明示 (C++11)
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Special member functions
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テンプレート
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Templates
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Miscellaneous
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インラインアセンブリ
 
終了するループまたは
文を切り替える
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switch statement
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それが条件式と条件ステートメントを使用してループを終了するそうでなければ、まずいですときに使用される.
Original:
Used when it is otherwise awkward to terminate the loop using the condition expression and conditional statements.
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目次

[編集] 構文

break

[編集] 説明

このステートメントの後直ちに制御が外側のループの次の文に移される。ループを囲んで宣言されたすべての自動ストレージ·オブジェクトは、外側のループの後の最初の行が実行される前に破棄され.
Original:
After this statement the control is transferred to the statement immediately following the enclosing loop. All automatic storage objects declared in enclosing loop are destroyed before the execution of the first line following the enclosing loop.
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[編集] キーワード

break

[編集]

#include <iostream>
 
int main()
{
    int i = 2;
    switch (i) {
        case 1: std::cout << "1";
        case 2: std::cout << "2";   //execution starts at this case label
        case 3: std::cout << "3";
        case 4:
        case 5: std::cout << "45";
                break;              //execution of subsequent statements is terminated
        case 6: std::cout << "6";
    }
 
    std::cout << '\n';
 
    for (int j = 0; j < 2; j++) {
        for (int k = 0; k < 5; k++) {         //only this loop is affected by break
            if (k == 2) break;
            std::cout << j << k << " ";
        }
    }
}

Output:

2345
00 01 10 11