Error[Pe029]: expected an expression 知道原因不

只看该作者 · 2016-7-19 16:24

#define offsetof(TYPE, MEMBER) ((unsigned int) &((TYPE *)0)->MEMBER)
#define container_of(ptr, type, member) ({ \
      const typeof( ((type *)0)->member ) *__mptr = (ptr); \
      (type *)( (char *)__mptr - offsetof(type,member) );})

struct student {
      char name[20];
      char sex;
};

void main(void)
{

//  off_set = offsetof(student_info, age);
//  stu_info.age = 10;
//  ptr = container_of(&stu_info.age, student_info, age);
struct student st={"zhangsan",'m'};
struct student *tmp;
char *ptr_name=st.name;
tmp=container_of(ptr_name,struct student,name);
}