【代码块】-计算机蜂鸣

整理代码块

代码块整理后存储，供后期使用

计算机蜂鸣
class Program
{
  static void Main(string[] args)
  {
    while (true)
    {
      Console.WriteLine("please press num \"1\" or \"2\"");
      int num = Convert.ToInt32(Console.ReadLine());
      
      if (num == 1)
        if (Beep(3000, 5000))
          Console.WriteLine("成功");
        else
          Console.WriteLine("失败");
      else
      {
        if (Beep(500, 700))
          Console.WriteLine("成功");
        else
          Console.WriteLine("失败");
      }
    }
  }
  [DllImport("Kernel32.dll")]
  // 頻率 持續時間
  public static extern bool Beep(int frequency, int duration);
}