程序目的是查找这些数据中，有几个id=1 level=8的结构体信息，结构体塞代码里了。
程序一共有三行输出（包括一行换行），控制台本应输出两行结果，但是出现了第三行不正确的输出。随意注掉任何一条输出结果的语句，控制台就会正常显示。
换种输出方式也出现一样的问题。            

//结构体
typedef struct TagPlayer        
{        
    int id;    
    int level;    
}Player;    
//输出方式1
printf("%x %x\n",*(y-1),*(y));
printf("%x %x\n",y-1,y);
//输出方式2
printf("%x %x\n",*(y-1),y-1);
printf("%x %x\n",*(y),y);

#include "stdafx.h"

char arr[]=
{
    0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x07,0x09,                    
    0x00,0x20,0x10,0x03,0x03,0x0C,0x00,0x00,0x44,0x00,                    
    0x00,0x33,0x01,0x00,0x00,0x08,0x00,0x00,0x00,0x00,                    
    0x00,0x00,0x00,0x02,0x64,0x00,0x00,0x00,0xAA,0x00,                    
    0x00,0x00,0x64,0x01,0x00,0x00,0x00,0x08,0x00,0x00,                    
    0x00,0x00,0x02,0x00,0x74,0x0F,0x41,0x00,0x00,0x00,                    
    0x01,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x0A,0x00,                    
    0x00,0x02,0x57,0x4F,0x57,0x00,0x06,0x08,0x00,0x00,                    
    0x00,0x00,0x00,0x64,0x00,0x0F,0x00,0x00,0x0D,0x00,                    
    0x00,0x00,0x23,0x00,0x00,0x64,0x00,0x00,0x64,0x00                    
};

typedef struct TagPlayer        
{        
    int id;    
    int level;    
}Player;        

int main()
{
    char* x=arr;
    int len = sizeof(arr) / sizeof(arr[0]);
    while(x-arr<len-7)
    {
        int* y=(int*)x;
        if(*y==1)
        {
            y++;
            if(*y==8)
                printf("%x %x\n",*(y-1),*(y));
                printf("%x %x\n",y-1,y);
                printf("\n");
        }
        x++;
    }
    return 0;
}

问题看不懂，代码看不懂，描述的现象也看不懂

#include <stdio.h>
#include <string.h>

int main( void )
{
    unsigned char buf[] =
    {
        0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x07,0x09,
        0x00,0x20,0x10,0x03,0x03,0x0C,0x00,0x00,0x44,0x00,
        0x00,0x33,0x01,0x00,0x00,0x08,0x00,0x00,0x00,0x00,
        0x00,0x00,0x00,0x02,0x64,0x00,0x00,0x00,0xAA,0x00,
        0x00,0x00,0x64,0x01,0x00,0x00,0x00,0x08,0x00,0x00,
        0x00,0x00,0x02,0x00,0x74,0x0F,0x41,0x00,0x00,0x00,
        0x01,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x0A,0x00,
        0x00,0x02,0x57,0x4F,0x57,0x00,0x06,0x08,0x00,0x00,
        0x00,0x00,0x00,0x64,0x00,0x0F,0x00,0x00,0x0D,0x00,
        0x00,0x00,0x23,0x00,0x00,0x64,0x00,0x00,0x64,0x00 
    };

    struct Player
    {
        int id;
        int level;
    } player_tag = { 1, 8 };

    const size_t buf_size = sizeof(buf)/sizeof(*buf);
    const size_t tag_size = sizeof(struct Player);
    for( const unsigned char* p=buf; p+tag_size<=buf+buf_size; ++p )
    {
        if( memcmp(p,&player_tag,tag_size) == 0 )
        {
            printf( "%p: ", p );

            struct Player tmp;
            memcpy( &tmp, p, tag_size );
            printf( "%x %x\n", tmp.id, tmp.level );
        }
    }

    return 0;
}

谢谢大佬