C# Adding text with a float numbers using String.Format() method

Program

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Demo for put characters and words in floating point number");

            Console.WriteLine(String.Format("{0:Number is 0.0}", 256.3));   
            Console.WriteLine(String.Format("{0:0xxx.yyy0}", 256.3));          

            Console.WriteLine();  
        }
    }
}

Output

Demo for put characters and words in floating point number
Number is 256.3
256xxx.yyy3