Hi all, I found the following function, which is used to remove the head of a linked list. void RemoveHead(node **head) { node *temp; if (head && *head) { /* Corrected code */ temp = (*head)->next; free(*head); *head = temp; } } 1. Why is the purpose of 'head' in the 'if' condition? Shouldn't '*head' suffice? 2. This function has an argument, which is a po...

See the registration functiion of notifier chain: static int notifier_chain_register(struct notifier_block **nl, struct notifier_block *n) { while ((*nl) != NULL) { if (n->priority > (*nl)->priority) break; nl = &((*nl)->next); } n->next = *nl; rcu_assign_pointer(*nl, n); return 0; } Why the first parameter is of type pointer to pointer, ...

如题 有了license还是跑不起来

pointer是指针的意思吧 point是点的意思，偶在学习和工作中接触到他们的机会都比较多 上周去买了本c和指针，现在每天早上起来看看，感觉还不错，每个男人都喜欢梦想，偶也不例外。 最近一周在看《金石奇缘》－－tvb新作，呵呵，可能只有15集哦，我想，港台剧看的不少，特别经典的如《流金岁月》…… 的确看的非常舒服，看多了不免想感慨一下，听的最多的一句是“其实做人呢，最重要是开心”，所谓见仁见智，我在每部港剧中都...

A.7.1 pointer Generation If the type of an expression or subexpression is ``array of T,'' for some type T, then the value of the expression is a pointer to the first object in the array, and the type of the expression is altered to ``pointer to T.'' This conversion does not take place if the expression is in the operand of the unary & operator, or of ++, --, sizeof, or as the left operand of an as...

本帖最后由 yshihyu 于 2013-11-26 23:19 编辑 [code]#include using namespace std; class CBaseA { public: void test3() {} char m_A[32]; void test1() {} void test2() {} CBaseA() { cout << "CBaseA this address=" << this << endl; } }; class CBaseB : CBaseA { public: char m_B[64]; void test() {} CBaseB() { cout << "CBaseB this address=...

你们感觉那个好， 我比较喜欢pointer，而且this本身就是个指针。:mrgreen: 还有就是我用Pioneer比较习惯了。 兄弟们说说自己的感想。

[code] #include #include #include #include // For bool, false, true #include // For strcmp() struct Family * get_person(void); struct Famliy *pmember1; struct Family *pmember2; bool set_ancestry_fuck(struct Famliy *pmember1, struct Family *pmember2); struct Date { int day; int month; int year; }; struct Family { st...

typedef void (SafeArray::*MFPTR1)(int, int); typedef int (SafeArray::*MFPTR2)(int); MFPTR1 mfPtr1 = 0; MFPTR2 mfPtr2 = 0; mfPtr1 = &SafeArray::set; mfPtr2 = &SafeArray::get; 为什么成员函数指针 需要使用 & 取地址? 而一般函数指针 不需要用到 & ? 谢谢

程序大体如下 void function::remove(U32 clientId) { vector ::iterator iter; /*Data为一个定义的类 vector ::iterator iter_client; for (iter = Data.begin(); iter != Data.end(); iter++) { for( iter_client = (*iter)->_clientId.begin();iter_client != (*iter)->_clientId.end();iter_client++ ) { if( *iter_client == clientId ) { (*iter...