C# code:

using System;
using System.Diagnostics;

class Program {
    static void Main() {
        int n = 100000000;
        int x = 0;

        Stopwatch stopwatch = new Stopwatch();
        stopwatch.Start();

        for (int i = 0; i < n; i++) {
            x += i;
        }

        stopwatch.Stop();
        Console.WriteLine("Time elapsed: {0} ms", stopwatch.Elapsed.TotalMilliseconds);
        Console.WriteLine("Result: {0}", x);
    }
}

C++ code:

#include <iostream>
#include <chrono>

int main()
{
    int n = 100000000;
    int x = 0;

    auto start = std::chrono::high_resolution_clock::now();

    for (int i = 0; i < n; i++)
    {
        x += i;
    }

    auto end = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
    std::cout << "Time elapsed: " << duration.count() << " ms" << std::endl;
    std::cout << "Result: " << x << std::endl;

    return 0;
}

C# gives me results around 230 ms while C++ constantly gives me time 260+ ms.
I tried few other examples but always in such simple loop examples C# seems to beat C++..

Could someone explain me how it happens? Thoguht that C# has no chance to reach C++ performance..

Thank you in advance for help <3