C++

When we read the Gnu/linux kernel code, we encounter a special way to initialize the structure. This method is not introduced in some C textbooks (such as version anecdotes, K&r two). This approach is called specifying initialization (designated

0. Static modifier variables and functionsstatic modifier variable, 1) scoped, in this file. Global variables (custom, this file before the need for extern declaration), local variables function, 2) life cycle, the program has been saved during

Today I met a few good questions, and some of the previous pieces to write an article, as I delay to the study room an excuse for it.First, the first question.1 intFunChar*s) {2 Char* t =s;3 while(*t++);4 returnT-s;5 }6 the function of

The void type in C is actually a universal type, which means that our void can represent any type, that is, his range is wider than a specific type, for example:int *p = NULL;void *ptr = P; This is possible because the void * type contains an int *

Trinocular operatorThe trinocular operator: Also called the ternary operator. The symbol for this operator is:? :Grammar:Expression 1? Expression 2: Expression 3;Semantic:Execute expression 1, execute, the result of expression 1 if true, then

/* Note:your choice is C IDE */#include "stdio.h"void Main (){printf ("School Name:%15s\n", "Southern College");printf ("Class name:%15s\n", "s1su137");printf ("Student Name:%15s\n", "Liang Jinjie");printf ("Student Sex:%15c\n", ' M ');printf

Whether in our development projects, or in our daily life, will be more involved in file compression. When it comes to file compression, someone may want to ask how the file compression is implemented, what the principle of implementation is, and

#include #define N 100010#define M 1000010int c[n],sum[m];int next[n],last[m];int head[m];int f[m];int N,m,ans;inline int Read (){int X=0,f=1;char Ch=getchar ();while (ch ' 9 ') {if (ch== '-') F=-1;ch=getchar ();}while (ch>= ' 0 ' &&chreturn

Reflection (Reflection) January 02, 2008 Wednesday 11:21 Two real-world examples:1, B Super: Everyone has done a physical examination of the B-Super bar, B-ultrasound can be detected through the belly of your internal organs of the

Recently some friends often ask me some questions, for example, how to convert a string into a Base64 string, how to convert a binary file into a Base64 file, and how to convert back to the original file, here I write the methodstring and Base64

Today, a colleague opens the CSH Command window and finds that it cannot enter any characters.Try a variety of methods, delete input method, restart the computer, change CSH version, are useless.The last time the system environment variable term is

C # Logging error logs (introduction, method Code)Introduction: The Program in error logging error log, can be conducive to maintenance, you can also record some of the procedures inside the operation and so on, it is very important, but alsoMethod 1

Method One:1 RegistryKey Mainkey = Microsoft.Win32.Registry.LocalMachine; 2 RegistryKey subkey = Mainkey.opensubkey (@ "software\microsoft\internet explorer\version Vector "); 3 Object value = Subkey.getvalue ("IE");Method Two:1 Object value =

Paste the code belowusingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Windows.Forms;namespacelambda Expression {classProgram {Static voidMain (string[] args) { //the

C + + defines the structure as follows and needs to be transformed into C #typedef struct TAGNET_DVR_CID_ALARM{DWORD dwsize;BYTE scidcode[cid_code_len/*4*/]; CID Event NumberBYTE sciddescribe[name_len/*32*/]; CID Event NameNET_DVR_TIME_EX

---restore content starts---A simple c-language implementation of the matrix multiplication program:This is the formula for matrix Multiplication:Source:1#include 2#include 3 #defineM 1004 5 intMainvoid)6 {7

1. Theconst object must be initialized because the value cannot be changed once it is Created. Eg:const int i = GetSize (); correct : run-time Initializationconst INT J = 42; correct: Compile-time Initializationj = 33; error: attempting to Write

Often see the following code: #ifdef _cplusplusextern "C" {#endif#include "XXX.h"#ifdef _cplusplus}#endif Explain:The purpose of extern "C" is to tell the C + + compiler that the following code compiles according to C, and

The rx-8025 is an off-chip i²c real-time clock, which is used in 9260 board methods as follows. The overall idea is to configure the kernel to add drivers (the I²c driver, the kernel has been provided very complete), board-level files to add devices,

Const in C/C ++, constin 1. the const object must be initialized because the value cannot be changed once created. Eg: Const int I = GetSize (); // correct: runtime Initialization Const int j = 42; // correct: initialization at compilation J = 33; //