C++

Today, I encountered a strange problem. Development Environment: 1. Eclipse CDT, using the gcc compiler and function library of MinGW 2. Visual Studio 2008 Problem description: A dll is compiled using gcc in eclipse cdt. This dll contains a

The knowledge points of C ++ are fragmented and tedious, but they do not have any effect in conclusion. More problems should be found in practice. Today, I wrote the implementation code for linear tables in "data structures, algorithms, and

1) linux version: 1. create cpp file, ex: test. cpp   #include   int main(int argc, char *argv[])   {       QApplication app(argc, argv);       QLabel *label = new QLabel("Linux is wonderful", 0);       app.setMainWidget(label);         

1. link address: http://poj.org/problem? Id = 1226 2. Question: Substrings Time Limit:1000 MS   Memory Limit:10000 K Total Submissions:10252   Accepted:3519 DescriptionYou are given a number of

1. What is a virtual function? Simply put: ThoseVirtualThe member function modified by the keyword is a virtual function. Its main role is to achieve polymorphism. Polymorphism is the core of object orientation. Its main idea is that it can adopt

1 Gprof Practice 1. Time consumed for initializing large objects The entire execution process is called 307 times, and the initialization time of the object accounts for 6.5%.Before the program enters the constructor, the parent class Object

Reading "C ++ meditation": copying Constructors num= VehicleSurrogate parking_lot[ parking_lot[num++]=   The above section is explained in the book: "This statement creates a copy of object x, binds the VehicleProxy object to this copy, and

The requirement is that no matter what font is used, only the row height can be set. I haven't found any simple and reliable method for a long time. I can see the source code of QComboBox and find that its Row Height is the maximum value based on

This is a windows-based client-side server program written in C ++. It is suitable for beginners. The idea is as follows. start the server. After the server is started, a subthread is created to send messages to the client. an infinite loop is used

Typedef can be used to define synonyms of types: Typedef double wages Wages is the alias of double. Double val; Wages val; The preceding two statements are equivalent. You can also specify an alias for wages: Typedef wages salary   Typedef

I. Preparations before CompilationOn the win platform, check out the latest code through svn at this address. Download and install Cmake Because the Shark library depends on the Boost library, you need to download the Boost Library Ii. compilation

1. Virtual Functions Virtual functions are a powerful weapon for implementing polymorphism in c ++. To declare virtual functions, you only need to add virtual keywords before the functions. virtual keywords are not required for the definition of

1. Description

When I write a program today, I use LoadCursor to load the IDC_HAND hand-shaped cursor, which always fails to load, prompting that the value is undefined. Many methods have been found in Baidu, such as # define IDC_HAND MAKEINTRESOURCE (32649.

A vector is a container, a dataset, and contains many elements. The biggest difference from arrays is that vector can grow dynamically. The key to implementing the big number operation using vector is to read a large number in string mode, then,

A derived class cannot directly access private members of a base class. to access a base class, you must use the base class interface, that is, its member functions. There are two implementation methods: 1. Add protection members to the declaration

Generation MethodAdd SourceSudo add-apt-repository ppa: chris-lea/zeromqSudo add-apt-repository ppa: chris-lea/libpgmSudo apt-get updateInstall the deb packageSudo apt-get install libzmq-devSudo apt-get install libpgm-devGenerate deb:Sudo apt-get

When talking about Rational Rose, the first word we think of should be "modeling". modeling is indeed the essence of Rational Rose. Through Visual Modeling, link abstract things with the objective world, so that we have a clearer understanding and

You can use GetTcpTable to obtain the IP address, port, remote IP address, and port of the current process. However, you cannot associate the socket with the process name! You can use AllocateAndGetTcpExTableFromStack to implement this function, but

I have been studying Binary Trees for two days! The path to acm allows me to experience the great efforts I have made. I don't need to talk much about it. Check the code I found on the Internet: The meaning of this question is very clear. I will