C:\>numVSstring.pl Enter a number or string: 123.2 123.2 is a number C:\>numVSstring.pl Enter a number or string: 1E3 1E3 is a number C:\>numVSstring.pl Enter a number or string: 17 17 is a number C:\>numVSstring.pl Enter a number or string: now is the time 'now is the time' may be a string C:\>numVSstring.pl Enter a number or string: III 'III' may be a string