const。指针和引用？
常量指针和引用之间有什么区别？
What is the difference between a constant pointer and a reference?
常量指针的名称意味着无法再次绑定。参考的情况也是如此。
Constant pointer as the name implies can not be bound again. Same is the case with the reference.
我想知道什么样的场景会比其他场景更受欢迎。他们的C ++标准及其实现有多大的不同？
I wonder in what sort of scenarios would one be preferred over the other. How different is their C++ standard and their implementations?
cheers
有三种类型的常量指针：
There are 3 types of const pointers:
//Data that p points to cannot be changed from p
const char* p = szBuffer;
//p cannot point to something different.
char* const p = szBuffer;
//Both of the above restrictions apply on p
const char* const p = szBuffer;
上述方法2与引用最相似。
Method #2 above is most similar to a reference.
引用和上面所有3种类型的const指针之间有一些主要的区别：
There are key differences between references and all of the 3 types of const pointers above:
-
是NULL。
Const pointers can be NULL.
引用没有自己的地址，而指针则是。
引用的地址是实际对象的地址。
A reference does not have it's own address whereas a pointer does.
The address of a reference is the actual object's address.
指针具有自己的地址，并将其指向的值的地址保留为其值。
A pointer has its own address and it holds as its value the address of the value it points to.