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C switch 关键字

❮ C 关键字


示例

计算星期几的名称

int day = 4;

switch (day) {
  case 1
    printf("Monday");
    break;
  case 2
    printf("Tuesday");
    break;
  case 3
    printf("Wednesday");
    break;
  case 4
    printf("Thursday");
    break;
  case 5
    printf("Friday");
    break;
  case 6
    printf("Saturday");
    break;
  case 7
    printf("Sunday");
    break;
}

// 输出 "Thursday" (day 4)
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定义和用法

The switch 关键字选择要执行的多个代码块之一。

从上面的示例中,它的工作原理如下

  • The switch 表达式只会被评估一次。
  • 表达式的值与每个 case 的值进行比较。
  • 如果匹配,则执行关联的代码块。
  • The break 关键字用于在找到匹配项时退出 switch 块

相关页面

在我们的 C Switch 教程 中阅读有关 switch 语句的更多信息。


❮ C 关键字

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