[转]C和C# struct对齐

C#代码：

using System;
 
namespace ConsoleApplication
{
    public unsafe struct TestStruct
    {
        public int x;
        public int y;
        public fixed byte cs[10];
        public int z;
    }
 
    class Program
    {
        unsafe static void Main(string[] args)
        {
            TestStruct ts = new TestStruct()
            {
                x = 10
                 ,
                y = 20
                ,
                z = 30
            };
            for (int i = 0; i < 10; i++)
            {
                *(ts.cs + i) = (byte)(i + 10);
            }
            byte[] bs = new byte[sizeof(TestStruct)];
            for (int i = 0; i < sizeof(TestStruct); ++i)
            {
                bs[i] = *(((byte*)&ts) + i);
            }

            Console.WriteLine(string.Format("C# Data({0}):", sizeof(TestStruct)));
            for (int i = 0; i < sizeof(TestStruct); ++i)
            {
                Console.Write(*(((byte*)&ts) + i));
                Console.Write(" ");
            }
            Console.ReadLine();
        }
    }
}

C代码：

#include <stdio.h>
 
typedef struct
{
    int x;
    int y;
    char cs[10];
    int  z;
} TestStruct;
 
int main()
{
    TestStruct ts = { 0 };
    ts.x = 10;
    ts.y = 20;
    ts.z = 30;
    for (int i = 0; i < 10; ++i)
    {
        *(ts.cs + i) = i + 10;
    }

    printf(" C Data(%d):\n",sizeof(ts));
    for (int i = 0; i < sizeof(ts); ++i)
    {
        printf("%d ", *((char*)&ts + i));
    }
    return 0;
}