pointers and references

First, start(i) Input and outputThe role of 1.endlThe Endl operator is used to end the current line and flush the buffer contents associated with the device to the device. Without this character, once the program crashes suddenly, it can cause the

The C + + built-in array supports the container's mechanism, but it does not support the semantics of container abstraction. To solve this problem we implement this class ourselves. in standard C + +, it is implemented with container vectors (vector)

The C + + built-in array supports the container's mechanism, but it does not support the semantics of container abstraction. To solve this problem we implement this class ourselves. in standard C + +, it is implemented with container vectors (vector)

54 The function overload and the generic mechanism are called compile-time polymorphism, the Run-time polymorphism is defined as a virtual function in the base class, the virtual function is redefined in a derived class, and a virtual function is

Vectors is sequence containers representing arrays that can change in size.Just like arrays, vectors use contiguous storage locations for their elements, which means this their elements can also be Accessed using offsets on regular pointers to its

*************************************** Reprint Please specify the Source: Http://blog.csdn.net/lttree ********************************************Today, we visited the quiz community,In C + +, I saw someone asking about const_cast,Just in the >,

Introducing another class into a header file is often written in two ways:(1) class Name;(2) #include "Name.h"What is the difference between them? The first one is called forward declaration, name is an incomplete type (incompete Type), known as

The original: The parameter passing mechanism of C + +Recently the company recruit more, thus interviewed a lot of C + + programmers. During the interview, I would ask questions about parameter passing, with particular emphasis on pointers. Because

Variable and base type number of bytes in base type on different platforms Type 16-bit Platform 32-bit Platform 64-bit Platform Char 1 1 1 Short 2 2 2

C-style strings (C-style string)The C program treats a pointer to an array of characters ending with a null character as a string. In C + +, string literals are C-style strings. The C standard library defines a series of library functions that

Use standard C++ type conversions: static_cast , dynamic_cast ,, reinterpret_cast and const_cast .static_castUsage:static_cast (expression)The operator expression converts to a type-id type, but there is no run-time type check to guarantee the

In object-oriented program design, there are often contact classes, objects and other professional nouns; what is the class, what is the object? What is the application of the program? Class is the core of object-oriented programming, which is

Python data types are divided into mutable (variable) and immutable (immutable)Mutable:list, DictInmutable:int, string, float, tuple ...Mutable and immutable are literally understood to mean that data is mutable and data is immutable.Since the

I. Definition and initialization of arrays1. Definition of Arraysthe dimensions of an array must be defined with a constant expression greater than or equal to one, which can contain only integer literal constants, enumerated types, or integers

Here are some of the key points that apply to all C + + program apes. I say they are the most important, because these points are mentioned in the C + + book or you usually can not find the site. For example, pointers to members, which are not

2013 I am in Xiamen C + + Job Summary1, the general company out of the interview problem in the search for errors, are from the usual internal use of the process of the real error.For example, the use of erase in STL: See more :

1, cons can limit a variable, yes its value cannot be changed2. By default, const objects are only valid within a file.At compile time, the compiler replaces all occurrences of the const variable in the program with the initial value of const, so

1. Force type conversions:Typically, C-style type conversions are used to convert between simple data types, whereas for conversions between classes, 4 conversions are used.Reinterpret_cast (expression): for pointers and references only, casts one

1: A conceptual difference between a reference and a pointerA reference is an alias for a variable, such asint m;int &n=m;Reference as an alias. It is logically not independent, its existence is dependent, so the reference must be initialized at the

1: A conceptual difference between a reference and a pointerA reference is an alias for a variable, such asint m;int &n=m;　　Reference as an alias. It is logically not independent, its existence is dependent, so the reference must be initialized at