结构体指针，内容偏移

结构体指针，默认会以4字节补齐？

指向的内容有偏移？

#pragma pack(1)typedef struct LINKAGE {    unsigned char source_device_id;    unsigned char target_device_id;    unsigned char source_device_type;    unsigned char source_action;    unsigned char target_device_type;    unsigned char target_action;    unsigned int  source_parameter;    unsigned int  target_parameter;    unsigned char status;}LINKAGE;#pragma pack()

在定义结构体的地方加

#pragma pack(1)

<pre name="code" class="objc">#pragma pack()

命令结构体以1字节补齐