请各位朋友告诉我,下面的结构定义是怎么回事???
struct pbuf {
struct pbuf *next;
/* high 4 bits, flags, low 4 bits reference count */
u8_t flags, ref;
void *payload;
/* Total length of buffer + additionally chained buffers. */
u16_t tot_len;
/* Length of this buffer. */
u16_t len;
};
我主要是不明白,在这个结构中又有一个struct pbuf *next; 这是什么意思???
希望各位朋友帮我解释一下!!!
struct pbuf {
struct pbuf *next;
/* high 4 bits, flags, low 4 bits reference count */
u8_t flags, ref;
void *payload;
/* Total length of buffer + additionally chained buffers. */
u16_t tot_len;
/* Length of this buffer. */
u16_t len;
};
我主要是不明白,在这个结构中又有一个struct pbuf *next; 这是什么意思???
希望各位朋友帮我解释一下!!!
u16_t tot_len;
是什么意思?
u16_t = unsigned short
struct pbuf {
struct pbuf *next;
/* high 4 bits, flags, low 4 bits reference count */
u8_t flags, ref;
void *payload;
/* Total length of buffer + additionally chained buffers. */
u16_t tot_len;
/* Length of this buffer. */
u16_t len;
};
我主要是不明白,在这个结构中又有一个struct pbuf *next; 这是什么意思???
希望各位朋友帮我解释一下!!!
struct NODE
{
int value;
struct NODE* pNext;
}struct NODE item1,item2;
item1.pNext=&item2;
是指向自身的指针,主要用于构成链表
struct pbuf {
struct pbuf *next;
/* high 4 bits, flags, low 4 bits reference count */
u8_t flags, ref;
void *payload;
/* Total length of buffer + additionally chained buffers. */
u16_t tot_len;
/* Length of this buffer. */
u16_t len;
}aaa,*bbb;bbb c1,c2,c3;
初始化c1,c2,c3;
c1->next=c2;
c2->next=c3;
则现在就构成了一个连表
c1->c2->c3;
明白了吧
是指向自身的指针,主要用于构成链表
struct pbuf {
struct pbuf *next;
/* high 4 bits, flags, low 4 bits reference count */
u8_t flags, ref;
void *payload;
/* Total length of buffer + additionally chained buffers. */
u16_t tot_len;
/* Length of this buffer. */
u16_t len;
}aaa,*bbb;bbb c1,c2,c3;
初始化c1,c2,c3;
c1->next=c2;
c2->next=c3;
则现在就构成了一个连表
c1->c2->c3;
明白了吧