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EN CSharp Keyword nuint

Codex edited this page Oct 11, 2026 · 2 revisions

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C#: nuint

Handbook C# · Practical Guide

An unsigned integer of the size of the machine pointer.

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
nuint amount = 12;
System.Console.WriteLine(amount + 2);

Result:

14

Syntax

nuint value = 120;

The type of the variable determines the range and rules of arithmetic. To check the overflow of integers, use checked; for text conversion — TryParse.

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)
    {
        nuint first = 120;
        nuint second = 2;
        Console.WriteLine(first + second);
    }
}

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)
    {
        nuint[] values = [120, 2, 3];
        foreach (nuint value in values) Console.WriteLine(value);
        Console.WriteLine(nuint.MaxValue);
    }
}

Official source: Microsoft Learn.

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