67 lines
1.6 KiB
Markdown
67 lines
1.6 KiB
Markdown
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---
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title: Break statement
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localeTitle: 休息声明
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---
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# 休息声明
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`break`语句终止它出现的封闭循环或switch语句。控件将传递给循环或开关块之后的语句。
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在第一个例子中，当i的值为3时，执行break语句，这导致循环的执行被终止。
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## 例
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```
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int[] array = { 1, 2, 3, 4, 5 };
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for (int i = 0; i < array.Length; i++)
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{
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if(i == 3)
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{
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break;
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}
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Console.WriteLine("Item on index {0} is {1}", i, array[i]);
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}
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```
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## 输出：
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```
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> Item on index 0 is 1
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> Item on index 1 is 2
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> Item on index 2 is 3
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```
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在第二个示例中，每个案例的末尾都包含一个break语句。这将执行案例中的语句，而不会继续下一个案例。如果没有break语句，程序将继续执行下一个案例，并且不会按预期运行。
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## 例
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```
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switch (exampleVariable)
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{
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case 1:
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Console.WriteLine("case 1");
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Console.WriteLine("This only shows in example 1");
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break;
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case 2:
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Console.WriteLine("case 2");
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Console.WriteLine("This only shows in example 2");
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Console.WriteLine("This also only shows in example 2");
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break;
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Console.WriteLine("This would not show anywhere, as it is after the break line and before the next case");
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default:
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Console.WriteLine("default");
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Console.WriteLine("This only shows in the Default Example");
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break;
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}
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```
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## 输出：
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```
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> case 1
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> This only shows in example 1
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>
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> case 2
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> This only shows in example 2
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> This also only shows in example 2
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>
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> default
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> This only shows in the Default Example
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>
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```
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