EN CSharp Keyword char

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C#: char

Handbook C# · Practical Guide

One 16-bit code element UTF-16. The symbol is written in single quotes; one Unicode character can consist of several elements.

Simple example (Example.cs)

Save this example separately as Example.cs. Run it independently of the other examples on this page.

Example.cs:

// PROJECT-EXAMPLE
char letter = 'A';
System.Console.WriteLine((int)letter);

Result:

65

Syntax

char letter = 'A';

Example 1: simple form

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        char letter = 'A';
        Console.WriteLine(char.ToLowerInvariant(letter));
        Console.WriteLine((int)letter);
    }
}

Example 2: another practical form

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        char[] letters = ['a', '7', 'Я'];
        foreach (char letter in letters) Console.WriteLine($"{letter}: {char.IsLetter(letter)}");
    }
}

Official source: Microsoft Learn.