利用C#实现将小数值四舍五入为整数

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Test_HalfAdjust
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("---------C#中常用的四舍五入函数介绍---------");
            double value1 = 3.01;
            double value2 = 3.49;
            double value3 = 3.50;
            double value4 = 3.51;
            double value5 = 3.99;
            double value6 = -0.01;
            Console.WriteLine("---- Math.Ceiling()----将双精度的内容统一舍为加1的整数");
            string result1=string.Format("{0}={1}; {2}={3}; {4}={5}; {6}={7}; {8}={9}; {10}={11}\n", value1,Math.Ceiling(value1),
                value2,Math.Ceiling(value2), value3,Math.Ceiling(value3), value4,Math.Ceiling(value4),
                value5,Math.Ceiling(value5),value6,Math.Ceiling(value6));
            Console.WriteLine(result1);
            Console.ReadLine();
        }//Class_end
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Test_HalfAdjust
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("---------C#中常用的四舍五入函数介绍---------");
            double value1 = 3.01;
            double value2 = 3.49;
            double value3 = 3.50;
            double value4 = 3.51;
            double value5 = 3.99;
            double value6 = -0.01;
            Console.WriteLine("---- Math.Floor()----将双精度的内容统一舍为小数点前的整数");
            string result2 = string.Format("{0}={1}; {2}={3}; {4}={5}; {6}={7}; {8}={9}; {10}={11}\n", value1, Math.Floor(value1),
                value2, Math.Floor(value2), value3, Math.Floor(value3), value4, Math.Floor(value4),
                value5, Math.Floor(value5), value6, Math.Floor(value6));
            Console.WriteLine(result2);
            Console.ReadLine();
        }//Class_end
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Test_HalfAdjust
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("---------C#中常用的四舍五入函数介绍---------");
            double value1 = 3.01;
            double value2 = 3.49;
            double value3 = 3.50;
            double value4 = 3.51;
            double value5 = 3.99;
            double value6 = -0.01;
            Console.WriteLine("---- Math.Round()----将双精度的内容按照四舍五入的整数");
            string result3 = string.Format("{0}={1}; {2}={3}; {4}={5}; {6}={7}; {8}={9}; {10}={11}\n", value1, Math.Round(value1),
                value2, Math.Round(value2), value3, Math.Round(value3), value4, Math.Round(value4),
                value5, Math.Round(value5), value6, Math.Round(value6));
            Console.WriteLine(result3);
            Console.ReadLine();
        }//Class_end
    }
}