Programmer Group

1, static member 1. Concept: class members declared as static become static members of the class. Member variables decorated with static are called static member variables, Member functions decorated with static are called static member functions. class Test { public: //Test():m_a(0){} Test():m_b(0){ } //Static functions do not have this ...

choice question 2-1 the condition that the circular queue with less one element space (m is the maximum queue length) is full (). A.rear== front B.(rear+1)%m==front C.(rear+1) == front D.front ==(front+1)%m 2-2 the cyclic queue is stored in array A[0... n-1], and its head and tail pointers are f and R respectively. The head pointer f always p ...

boost::scoped_ptr and std::auto_ptr is very similar. It is a simple smart pointer, which can ensure that the object is automatically released after leaving the scope. The following code demonstrates the basic application of this pointer: #include <string> #include <iostream> #include <boost/scoped_ptr.hpp> class implementati ...

catalogue 1, Please design a class that can only create objects on the heap 2, Designing a class can only create objects on the stack 3, Design a class that cannot be copied 4, Designing a class cannot be inherited 5, When designing a class, only one object can be instantiated         five point one   The singlet ...

Basic concept of list container Concept: list is a data structure that stores data in a chain, which is called a linked list Linked list: a discontinuous storage structure on a physical storage unit. The logical order of data elements is realized through pointer links in the linked list Composition of linked list: the linked list ...

1, Multiple choice questions 1. Perform the following procedure char *str; cin >> str; cout << str; If you enter abcd 1234, output (D) A. abcd         B. abcd 1234         C.1234         D. Output garbled code or error str is a char * pointer, uninitialized, an ...

In the last article, we obtained the RTSP communication process through WireShark packet capture. In this article, we analyze the working principle of each process through code. The inheritance relationship of live555 is too complex, so I made a diagram to simply record the class inheritance relationship related to h264 file transfer 1, OPTIO ...

Implement a simple vector container The implementation of all C++ STL containers needs to rely on a spatial configurator allocator. Although we don't pay attention to it when using containers, we have been using it all the time. The C++ STL library provides a simple implementation of the default spatial configurator allocator. Of course, we ne ...

C + + operator overloading Operator overloading concept: redefine the existing operators and give them another function to adapt to different data types Operator overloading can also occur 1. The plus sign operator (+) is overloaded Function: realize the operation of adding two user-defined data types code implementation #include < ...

1. Structure memory alignment Structure memory alignment is often asked in written examination and interview, so to make a summary, first verify the memory size of different structures through code: #include <stdio.h> struct Node1{ char c1; int val1; char c2; }; struct Node2{ char c1; char c2; int val1; }; struct ...