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C# 简写 If...Else


简写 If...Else(三元运算符)

还有一种简写形式的 if else,称为 **三元运算符**,因为它由三个操作数组成。它可以用来用一行代码替换多行代码。它通常用于替换简单的 if else 语句。

语法

variable = (condition) ? expressionTrue :  expressionFalse;

而不是写

例子

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

自己试试 »

你可以简单地写

例子

int time = 20;
string result = (time < 18) ? "Good day." : "Good evening.";
Console.WriteLine(result);

自己试试 »


C# 练习

通过练习测试自己

练习

如果 x **大于** y,则打印 "Hello World"。

int x = 50;
int y = 10;
 (x  y) 
{
  Console.WriteLine("Hello World");
}

开始练习


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