C＃中的Decimal.Truncate()方法

此方法用于通过舍弃任何小数位数来获取指定小数的整数位数。此方法通过删除小数点后的数字将指定的值四舍五入为最接近的整数。

Syntax: public static decimal Truncate (decimal d);
Here, d is the decimal number which is to be truncated.

Return Value: It returns the result of d rounded toward zero, to the nearest whole number.

例子：

// C# program to demonstrate the
// Decimal.Truncate(Decimal) Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        try {
  
            // Taking decimal variables
            // having fractional part
            Decimal dec1 = 214748.78549M;
            Decimal dec2 = 21458565.2996m;
  
            // using Decimal.Truncate(Decimal) Method
            Decimal val1 = Decimal.Truncate(dec1);
  
            // using Decimal.Truncate(Decimal) Method
            Decimal val2 = Decimal.Truncate(dec2);
  
            // Printing the Integral part only
            Console.WriteLine("The integral part of "+
                                "dec1 is: {0}", val1);
  
            Console.WriteLine("The integral part of "+
                                "dec2 is: {0}", val2);
        }
  
        catch (OverflowException e) {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

输出：

The integral part of dec1 is: 214748
The integral part of dec2 is: 21458565

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.decimal.truncate?view=netframework-4.7.2