/* * C# Program to Print the Sum of all the Multiples of 3 and 5 */ using System; using System.IO; class Program { static void Main() { File.Copy("sri.txt", "srip.txt"); Console.WriteLine(File.ReadAllText("sri.txt")); Console.WriteLine(File.ReadAllText("srip.txt")); Console.Read(); } } /* Contents of File S Contents of File S