Question

How to use IsLetter in C#

Answer 1

using System;

class Program
{
    static void Main() {
        char ch = 'a';
        bool result = Char.IsLetter(ch);
        Console.WriteLine(result);
        
        ch = '*';
        result = Char.IsLetter(ch);
        Console.WriteLine(result);
    }
}



/*
run:

True
False

*/

 

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Answer 2

using System;

class Program
{
    static void Main() {
        string str = "csharp programming";
        bool result = Char.IsLetter(str, 4);
        Console.WriteLine(result);
        
        str = "csharp programming";
        result = Char.IsLetter(str, 6);
        Console.WriteLine(result);
    }
}



/*
run:

True
False

*/

 

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