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C Else


else 语句

使用 else 语句来指定当条件为 false 时要执行的代码块。

语法

if (condition) {
  // 当条件为 true 时要执行的代码块
} else {
  // 当条件为 false 时要执行的代码块
}

示例

int time = 20;
if (time < 18) {
  printf("Good day.");
} else {
  printf("Good evening.");
}
// 输出 "Good evening."
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示例解释

在上面的示例中,time (20) 大于 18,因此条件为 false。因此,我们将继续执行 else 条件,并在屏幕上打印 "Good evening"。如果 time 小于 18,程序将打印 "Good day"。



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