There are 5 people sitting together and asking how old is the five? He said he was 2 years older than the 4th. Ask the age of the 4th person. He said he was 2 years older than the 3rd one. Asked the third person, and said that the 2nd People's
One of the most frequently used data structures in C + + is a list that is often present in our programs. I knew the list when we were learning C language. Start it is based on an institutional body.When we create a linked list, we return a
LetterTeacher. How are you doing. Read your blog and visit. I feel that you can answer my questions without the direct messages from the Lord.Students, 2012 graduated from an unknown university. Two years of work experience (the first year of C #,
Chapter 6 Function#函数基础
Declaration: Return type, function name, formal parameter list, semicolon
Definition: return type, function name, formal parameter list, function body
Call: function or function pointer, argument list
Huffman (Huffman) tree, named after the invention of its characters, also known as the optimal tree, is a class of the shortest two-fork tree with the right path, mainly used for data compression transmission.The construction process of Huffman tree
With the popularity of Web, IOS, Android and smart devices, new programming languages have sprung up and performed well, such as Ruby,python,scala,go,node.js,swift. The anti-Outlook has developed in the C # language for nearly 20 years (or, perhaps
file Stream
Stream class
Points by Access location
FileStream, MemoryStream, BufferedStream
Read/write Class
BinaryReader and BinaryWriter
TextReader and TextWriter
Gets the full path of the module.
String path1 = System.Diagnostics.Process.GetCurrentProcess (). Mainmodule.filename;
Gets and sets the fully qualified directory of the current directory (the directory from which the process starts)
string
Installation:Run developer command Prompt for VS2012 with administrator privilegesExecute command installutil "executable full path"Unloading:Run developer command Prompt for VS2012 with administrator privilegesExecute command installutil/u
1. Method One: Use OLE DB to read Excel files:The Excel file as a data source for the data read operation, the example is as follows:Public DataSet exceltods (string Path) {string strconn = "provider=microsoft.jet.oledb.4.0;" + "Data source=" + Path
Method One:Instantiate a timerStopwatch watch = new Stopwatch ();Start timingWatch. Start ();Here is the execution code to be evaluatedfor (int i = 1; i End TimingWatch. Stop ();Gets the total execution time (in milliseconds) measured by the current
The following methods are often used in the project, and you are welcome to criticize me.Reading data from an Excel tableThe first type: feature-rich, slow-speed /// ///reading data from Excel/// /// full path to the Excel
As you all know, C # Constructors are primarily used to set the initial values of properties in a class, but it is often overlooked that the constructor method of a class can also refer to a constructor method in the calling parent class or other
Advantages
Reduce Code Redundancy
Provide code reuse
Reduce code volume and improve code readability
Code is easy to manage and can be divided into parent and subclass classes
The ability to override the parent class through
Socket send function and recv Function
Socket send function and recv Function
1. send Function
Int send (SOCKET s, const char FAR * buf, int len, int flags );
Both the client and server applications use the send function to send data to the other
Map/vector erase, mapvectorerase
Core issue: whether the erase iterator is invalid
After vector calls erase, all iterators after this iterator become invalid;
After map calls erase, other iterators will not become invalid.
1 vector vecData; 2
Bzoj2982, 02786872982
Lucas theorem ..
Lucas theorem: C (n, m) = C (n % p, m % p) * C (n/p, m/p) % p
Pre-process the factorial and inverse factorial.
Code:
1 #include 2 #include 3 #include 4 #include 5 #include 6 using namespace std; 7 #define p 1
Differences between linear tables, linear tables, and linked lists
The linear table mentioned below is mainly a Linear Linked List. Here we will mainly use two-way linked list, one-way linked list, and so on. If an error is found, I still hope to
C ++ uses cin. getline as an example, and cin. getline as an example.
1 # include 2 # include 3 # include 4 using namespace std; 5 class stu {6 private: 7 char name [32]; 8 char ID [32]; 9 int age; 10 int score [4]; 11 int avg_score; 12 public: 1
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