Linux c Get IP address

#include #include #include #include #include #include #include intMainintargcChar**ARGV) {intSOCKFD;structIfreq IFR;Char*ifname="Eth0";strncpy(Ifr.ifr_name, ifname, ifnamsiz-1); SOCKFD = socket (af_inet, Sock_stream,0);if(IOCTL (SOCKFD, siocgifaddr,

Self-written C + + doubly linked list

Try to write a linked list using lambda and template #include "stdafx.h" Templatestruct node{t value;struct Node * pnext;struct Node * PPREV;}; Templateclass list{private:node * M_phead;int M_len; node* List::newnode (node* prev, T value); node*

Essential Windows Native (All)-C + +: virtual functions

[SOURCE DOWNLOAD]Essential Windows Native (All)-C + +: virtual functionsWebabcdIntroducedEssential C + + of Windows Native Virtual functions Example1. Base classCppHuman.h#pragmaOnce#includestring>using

Struct/union byte alignment for C language

One of the big advantages of C is that it controls the memory space, which is, of course, transparent to developers in general. Look at a problem that always bothers beginners: byte-aligned!Let's look at four important basic concepts:1. The

sorting algorithm (c + + implementation)

1#include 2 usingstd::vector;3 4Template5 voidSwap (vector &a,intIintj)6 {7T tmp =A[i];8A[i] =A[j];9A[J] =tmp;Ten } One A //Simple Insert Sort -Template - voidInsertionsort (Vector &a) the { - for(intp=1; P!=a.size (); ++p) - { -

My C + + notes (statement basic structure)

#includeusing namespaceStdintMain () {unsignedCharC1=24;intYearBOOLIsleapyear;/** input and output of data: * in C + +, the flow of data from one object to another is called a "stream". The stream is to be established before use and is deleted after

C Language-data structure (i)

1. Bubble sortvoid sort (intint n) { int i, J, temp; for 0 1; i++) {for (j = i; J ) { if (List[i] List[j]) { = list[i]; = List[j]; = temp;}} } }2. Two points

"Luogu OJ" "C + +" level 1-1

Level 1-1, 3 questionsRokua's first task description: Take the first step and learn the language and the Rokua. It won't be hard to go with the books and teachers.To complete this task, please AC down the following topics (i.e. through this topic):1.

The basic algorithm of C language 41-string matching problem

String matching issues/*===============================================================Title: Enter two string s,t, the output exists in S and the characters that do not exist in T are stored in the new string.And keep it in the order of the string

C + + recursive and non-recursive implementation of chain list reverse order

Test environment: VS2010 Windows7In reverse order, recursive call and chain-head interpolation were used to realize reverse order.The specific code is as follows:#include #include using namespace Std;class linklist{private:struct node{struct Node *

"Turn" C # Delegation of Notes (Delegate) (i)

Original: Small base to learn C # notes commissioned (Delegate) (I )Originally because of the previous interface that article many altar friends gave some advice, spent a morning event code of the interface and abstract class comparison and

C # Get IP Method CDN accelerates acquisition of real IP methods

Service side:Method OneHttpContext.Current.Request.UserHostAddress;Method Twohttpcontext.current.request.servervariables["REMOTE_ADDR"];Method ThreeString strhostname = System.Net.Dns.GetHostName ();String clientipaddress =

C # replaces the middle part of the string with the * number

When doing the mall evaluation, in order to show the authenticity of the evaluation and protect the privacy of the customer, we replace the middle part of the user nickname with * (if the word is replaced by * Two string the second string replaced

C # 's Network Wizard comprehensive analysis

Construction of the project framework Create the corresponding required class Tvprogram: Program ClassChannelbase: Channel base classTypeachannel:a class channel TYPEBCHANNEL:B type ChannelChannelFactory: Factory classThe data in the XML file

C # Mouse Global hooks

///mouse Global hooks/// public class Mousehook {Private Const int Wm_mouse MOVE = 0x200; Private Const int WM_LBUTTONDOWN = 0x201; Private Const int wm_rbuttondown = 0x204; Private Const int wm_mbuttondown = 0x207;

C # access Modifiers

A recent project compilation encountered a problem: an interface could not be accessed. The view code discovers that the interface definition does not show the modifier, plus the public compiles by playing. Check online for review basics, personally

OC and C Contrast learning

OC and C Contrast learning1, already have the foundation of C, how to get the quick introduction oc?1) source File comparisonThink & Implement 1:1) in the C language, what are the files that we encounter with different suffixes?. C. O. hExtended

HDU 2830 Matrix Swapping II (linear dp of preprocessing)

HDU 2830 Matrix Swapping II (linear dp of preprocessing)  Matrix Swapping II Time Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission (s): 1430 Accepted Submission (s): 950Problem Description Given an N * M

UVALive-3363 String Compression interval DP

UVALive-3363 String Compression interval DP There is a string, and now there is a conversion rule. If a circular substring appears in the string, you can convert it to: Number of substrings (substrings)Ask the shortest length of this

C/C ++ operators and their priority

C/C ++ operators and their priority 1. Auto-increment and auto-Increment (1) pre-calculation: "change first and then use" such as ++ I; Post calculation: "first use and then change" such as I --; For example:   int i = 5;y1 = ++i; y2 =

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