using System; using System.IO; using System.Text; class StringReadWriteApp { static void Main(string[] args) { StringWriter w = new StringWriter(); w.WriteLine("Sing a song of {0} pence", 6); string s = "A pocket full of rye"; w.Write(s); w.Write(w.NewLine); w.Write(String.Format(4 + " and " + 20 + " blackbirds")); w.Write(new StringBuilder(" baked in a pie")); w.WriteLine(); w.Close(); Console.WriteLine(w); } }