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C# 返回值


返回值

上一页中,我们在所有示例中都使用了void关键字,这表示该方法不应返回值。

如果您希望方法返回值,可以使用原始数据类型(例如intdouble)代替void,并在方法内部使用return关键字

示例

static int MyMethod(int x) 
{
  return 5 + x;
}

static void Main(string[] args)
{
  Console.WriteLine(MyMethod(3));
}

// Outputs 8 (5 + 3)

自己尝试 »

此示例返回方法的两个参数的总和

示例

static int MyMethod(int x, int y) 
{
  return x + y;
}

static void Main(string[] args)
{
  Console.WriteLine(MyMethod(5, 3));
}

// Outputs 8 (5 + 3)

自己尝试 »

您还可以将结果存储在变量中(建议这样做,因为它更易于阅读和维护)

示例

static int MyMethod(int x, int y) 
{
  return x + y;
}

static void Main(string[] args)
{
  int z = MyMethod(5, 3);
  Console.WriteLine(z);
}

// Outputs 8 (5 + 3)

自己尝试 »


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