传统意义的四舍五入计算

看看net的四舍五入：

  static void Main(string[] args)
        {
            Console.WriteLine(Math.Round(1.015, 2));
            Console.WriteLine(Math.Round(1.0151, 2));
            Console.WriteLine(Math.Round(1.0149, 2));
  
            Console.ReadLine();
        }

Output:

1.01
1.02
1.01

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