C# Seperate fractional and pure part in given number

using System;
using System.Collections.Generic;
using System.Text;

namespace
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(“Enter ur Num.”);
double a = Convert.ToDouble(Console.ReadLine());
float b = (float)a % 1;
int c = (int)a / 1;
string s = Convert.ToString(b);
string ass = Convert.ToString(a);
string cs = Convert.ToString(c);
int al = ass.Length;
int cl = cs.Length;
int tl = al - cl - 1;
int r = (int)Math.Pow(10, tl);
int rr = (int)(a * r);
int rrr = (int)(rr - (c * r));
Console.WriteLine("Pure part :" + c);
Console.WriteLine("Fractional part :" + rrr);
Console.ReadLine();
}
}
}


Output:

Enter ur num
12345.67890
Pure part : 123450
Fractional part : 67890