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C# else 语句


else 语句

使用 else 语句指定当条件为 False 时要执行的代码块。

语法

if (condition)
{
  // block of code to be executed if the condition is True
} 
else 
{
  // block of code to be executed if the condition is False
}

例子

int time = 20;
if (time < 18) 
{
  Console.WriteLine("Good day.");
} 
else 
{
  Console.WriteLine("Good evening.");
}
// Outputs "Good evening."

自己试试 »

示例说明

在上面的例子中,时间 (20) 大于 18,所以条件为 False。因此,我们继续执行 else 条件并在屏幕上打印 "晚上好"。如果时间小于 18,程序将打印 "早上好"。


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