Learn 2 CSharp 7

7. Printing output in different formats (say rounding up to 5 decimal places, truncating after 4 decimal places, padding zeros to the right and left, right and left justification)(Input output operations) using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace lrn2CSharp7 { class Program { static void Main( string[ ] args ) { double theNumber; Console.WriteLine( "Input a number to be formatted" ); Console.Write( ":" ); try { theNumber = Convert.ToDouble( Console.ReadLine( ) ); Console.WriteLine( "Original number: {0}", theNumber ); Console.WriteLine( "Rounded up to the 5th decimal place: {0}", Math.Round( theNumber, 5 ) ); Console.WriteLine( "Truncating after the 4th decimal place: {0}", Decimal.Truncate( Convert.ToDecimal( theNumber * 10000 ) ) / 10000 ); Console.WriteLine( "Padding 7 zeroes on each side: {0}", String.Format( "{0:0000000.0000000}", theNumber ) ); Console.WriteLine( "Here is a box with 20 spaces: | |" ); Console.WriteLine( "Here is the number left justified: |{0,-20}|", theNumber ); Console.WriteLine( "Here is the number right justified: |{0,20}|", theNumber ); } catch ( FormatException fe ) { Console.WriteLine( "You did not enter a valid number fool." ); } Console.WriteLine( "Press esc to exit." ); while ( !keyPressHandler( Console.ReadKey( true ) ) ) { Thread.Sleep( 250 ); /* no op */ } } protected static Boolean keyPressHandler( ConsoleKeyInfo input ) { if ( input.Key == ConsoleKey.Escape ) return true; return false; } } }