向c#返回来自c++函数的结构，然后返回数组更新

#include <iostream>

struct MyStruct {
    int a;
    double b;
};

extern "C" {
    __declspec(dllexport) void MyCppFunction(int* arr, int size, MyStruct* myStruct) {
        // 对传入的数组和结构体进行处理
        for (int i = 0; i < size; i++) {
            arr[i] *= 2; // 更新数组中的值
        }

        myStruct->a = 10; // 更新结构体中的值
        myStruct->b = 3.14;
    }
}

using System;
using System.Runtime.InteropServices;

namespace CSharpApp {
    class Program {
        [StructLayout(LayoutKind.Sequential)]
        public struct MyStruct {
            public int a;
            public double b;
        }

        [DllImport("YourCppDll.dll")]
        public static extern void MyCppFunction(int[] arr, int size, out MyStruct myStruct);

        static void Main(string[] args) {
            int[] myArray = { 1, 2, 3, 4, 5 };
            MyStruct myStruct;

            MyCppFunction(myArray, myArray.Length, out myStruct);

            // 输出更新后的数组和结构体的值
            Console.WriteLine("Updated Array:");
            foreach (int num in myArray) {
                Console.WriteLine(num);
            }

            Console.WriteLine("Updated Struct: a={0}, b={1}", myStruct.a, myStruct.b);
        }
    }
}