Original address:Http://www.cnblogs.com/yanlingyin/archive/2011/12/07/2278961.htmlValue Delivery:
A formal parameter is a copy of an argument, and changing the value of the parameter does not affect the value of the external argument. From the point
And about the value of delivery, pointer passing, reference transmission in these areas there will be misunderstandings, all I feel the need here also explain ~
Pointers are the same points and different points as references:
★ The same point:1.
This article from listening_music:http://blog.csdn.net/listening_music/article/details/6921608Thank you for the beautiful article provided by the author, I am very useful, thank you!1. Definitions of pointers and referencesHere's an overview of
An important feature in C + + is pointers, which not only have the ability to obtain addresses, but also have the ability to manipulate addresses. Pointers can be used in arrays, or as parameters for functions, to access memory and operations on
The three ways to define a pointer are: 1 int * p; 2. int* p; 3. int *p; The habit is different.The three ways to define a function pointer are: 1. int *p (); 2. int * p (); 3. int* p ();
1. Pointer passing and reference passing
In C, if you want
The following is an overview of what you can say in plain words:
Pointers-For a type t,t* is a pointer to T type, that is, a variable of type t* can hold the address of a T object, and type T can add some qualifiers, such as const, volatile
To understand the difference between value passing, pointer passing, and reference passing, the main purpose is to understand the arguments and parameters of the function, the scope of the function (automatic variables, stacks), the layout of the
Original link: http://www.cnblogs.com/yanlingyin/Value Passing :The parameter is a copy of the argument, and changing the value of the parameter does not affect the value of the external argument. From the point of view of the called function, the
Summary of Reference knowledgeA. References1. definition : is an alias of a variable (the target), the operation of the reference is exactly the same as the direct operation of the variable. Declarative method of reference: ra a
Yue Timor has been to a video site internship for two days, mainly engaged in mobile front-end development. The task of work, and the state of the sheep before the very different, from the mental domain to consider, can be summed up as follows:
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