using System;
using System.Collections.Generic;
using System.Text;
class Program
{
static void Main(string[] args)
{
char myChar = 'a';
Console.WriteLine("char.IsDigit('a'): {0}", char.IsDigit(myChar));
Console.WriteLine("char.IsLetter('a'): {0}", char.IsLetter(myChar));
Console.WriteLine("char.IsWhiteSpace('Hello There', 5): {0}",char.IsWhiteSpace("Hello There", 5));
Console.WriteLine("char.IsWhiteSpace('Hello There', 6): {0}",char.IsWhiteSpace("Hello There", 6));
Console.WriteLine("char.IsPunctuation('?'): {0}",char.IsPunctuation('?'));
}
}
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