处理FieldOffsets C# C++

using System;
using System.Runtime.InteropServices;

struct MyStruct
{
    public int Field1;
    public float Field2;
    public string Field3;
}

class Program
{
    static void Main()
    {
        Console.WriteLine("Field1 offset: " + Marshal.OffsetOf<MyStruct>("Field1"));
        Console.WriteLine("Field2 offset: " + Marshal.OffsetOf<MyStruct>("Field2"));
        Console.WriteLine("Field3 offset: " + Marshal.OffsetOf<MyStruct>("Field3"));
    }
}

#include <iostream>
#include <cstddef>

struct MyStruct
{
    int Field1;
    float Field2;
    std::string Field3;
};

int main()
{
    std::cout << "Field1 offset: " << offsetof(MyStruct, Field1) << std::endl;
    std::cout << "Field2 offset: " << offsetof(MyStruct, Field2) << std::endl;
    std::cout << "Field3 offset: " << offsetof(MyStruct, Field3) << std::endl;
    return 0;
}