Math Operations, C#

Math Operations

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("Hello, world!");
            
            var finalData = new
            {
                s2 = 5.4,
                t2 = 2.4
            };
            
            
            
            /*var a1 = finalData.Sum(val => val.s1);
            var a2 = finalData.Sum(val => val.s2);
            var b1 = finalData.Sum(val => val.t1);
            var b2 = finalData.Sum(val => val.t2);
            
            var totalA = a1 + a2;
            var totalB = b1 + b2;
            
            Console.WriteLine(totalA);
            Console.WriteLine(totalB);
            
            var r = 0;
            var m = 4.3;
            var rm = r + m;
            Console.WriteLine(rm);
            */
            
            
            decimal? a = 5.5M;
            decimal? b = 3.6M;
            var a1 = a??0;
            var b1 = b??0;
            var c1 = a1 + b1;
            var c = (a??0) + (b??0);
            //Console.WriteLine(a.GetType());
            Console.WriteLine("res c:" + c);
            Console.WriteLine("res c1:" + c1);
        }
    }
}


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