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See: The course "Jni:java and C + +" in the high Longoza hall http://edu.csdn.net/course/detail/1469See: http://www.cnblogs.com/yejg1212/archive/2013/06/07/3125392.htmlSee: http://blog.csdn.net/jiangwei0910410003/article/details/17465457First, the

in the C + + in which Vector is a very useful container, here is a summary of the container. 1 Basic Operations(1) header File #include .(2) Create Vector objects, vector Vec;(3) trailing insert Number: Vec.push_back (a);(4) use subscript to access

In the view of C + + programming ideas, each exercise is basically using ofstream,ifstream,fstream, before a rough knowledge of its usage and meaning, after reading a few Daniel's blog post, to organize and summarize:Here is the main discussion of

It is found that it only reads and writes a row in the file, and can only be used as a local variable, or read or write. It cannot be used simultaneously, not as a class variable, let alone extended. Moreover, it can only be implemented under the

embedded Linux C Language (11)--Static library functions and dynamic library functions First,Static link libraryStatic links a library is a collection of obj files, usually static links Library with ". A" as the suffix, the name format is generally

OverviewShared memory is one of the simplest ways to communicate between processes. Shared memory consent two or many other processes to access the same piece of memory, as if the malloc () function returns a pointer to the same physical memory area

Waitpid Waitpid (Waiting for the child process to break or end)Table header File#include #include Define function pid_t waitpid (pid_t pid,int * status,int options);Function descriptionWaitpid () will temporarily stop the execution of the current

I/O multiplexing uses a mechanism that can monitor multiple descriptors and, once a descriptor is ready (usually read-ready or write-ready), notifies the program to read and write. The I/O multiplexing technique is designed to address the technology

System Environment: ubuntu10.041. Common time types under Linuxtime_t, struct TM, struct timeval, struct TIMESPEC1.1 time_t Time TypeThe time_t type is defined in Time.h:typedef long time_t;Visible, time_t is actually a long integer type. Its value

reproduced in: 1852321I have always felt that binary file read and write is a very easy thing, so has not cared about, recently in writing an HTTP client, the implementation of the file download, found that there is always a problem, later found to

"Enumeration constants in iOS"SKIPWS: Skips whitespace reading. spaces, tabs \ t, carriage returns \ r, and newline characters \ n are collectively known as whitespace characters. The default is to set it.Left: Aligns the output data on the

1.Open File#include #include#includeint Open (constchar *pathname,int flag); // Open an existing file int Open (constchar *pathname,int flags,mode_t mode); // If the file does not exist, create it first // Success Returns the file description

Smart pointers are designed to provide a mechanism for proactively reclaiming memory in C + +, which requires manual delete after each new object. A little less attention on the memory leak.Smart pointers can solve the problems encountered

C language _exit () function: End Process Executionheader file: #include To define a function: void _exit (int status); Function Description: _exit () is used to immediately end the execution of the current process,

C language Getc () function: Reading characters from the streamheader file: #include The function getc () is used to extract characters from the stream, and its prototype is as follows: int getc (FILE *stream); The

C language Getpw () function: Gets the password file data of the specified userheader file: #include #include To define a function: int GETPW (uid_t uid, char *buf); Function Description: GETPW () will find the user

C language Getgrent () function: Get account data from group fileheader file: #include #include To define a function: struct Group * getgrent (void); Function Description: Getgrent () is used to read a group of data

C language Getutent () function: Get account login data from utmp fileheader file: #include To define a function: struct utmp *getutent (void); Function Description: Getutent () is used to read a login data from the Utmp

C language Setpwent () function: Read the account data from the password file from the beginning Header file: #include #include To define a function: void setpwent (void); Function Description: Setpwent () is used to

The QT console program runs through a separate thread to monitor user input exit programs (the user enters Q and presses ENTER to exit the console program). Monitor thread header file: #include class Cmykeyeventthread:public qthread {