pointer elt

Const pointer summary, const pointer Const summary:If the keyword const appears on the left side of the asterisk, it indicates that the theme is a constant. That is, the value of the variable cannot be modified through the pointer.If the keyword const appears on the right of the asterisk, it indicates that the pointer itself is a constant. That is, the

There is always a newly-introduced Windows programmer asking me what the Windows handle is, and I say you see it as a pointer-like identifier, but obviously the answer doesn't make them happy, and then I say go ask the Niang, they say not too much on the internet is difficult to understand. Today more busy, I surf the internet to check, just Baidu encyclopedia entry "handle" There are several kinds of statements, a lot of narrative is wrong, God knows

We often use pointers in C + + development, the benefits of pointers are very small, can be easily used to achieve the desired function, of course, here also involves some basic concepts of pointers. Pointers are not basic data types, we can understand that he is a special type of object, he occupies a certain space, but the benefits are C + + so powerful deep-seated reasons.Reprint Please specify source: Http://blog.csdn.net/elfprincexu1. Pointer fun

constant PointerRefers to--a pointer to a constant, as the name suggests, is the pointer to a constant, that is, it can not point to the variable, it points to the content can not be changed, not through the pointer to modify the content it points to, but the pointer itself is not a constant, its own value can be chang

First, what is a null pointer and a wild pointer1. Null pointer1> A pointer that does not store any memory address is called a null pointer (null pointer)The 2> null pointer is a pointer that is assigned a value of 0, and its valu

mark the source, welcome reprint!!! knowledge First, Welcome to correct!!! 1. DefinitionPointers and arrays are basically equivalent because of the way that pointers are arithmetic and how arrays are handled within C + +. --"C++primerplus" fifth editionIn most cases, C + + interprets the array name as the address of the first element in the group. int arr[10] = {1,2,3,4,5}; int *p = arr; cout　Summarize:Arrayname[i] equivalent to * (arrayname+i)2. P