学步园

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