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http://blog.csdn.net/ssdsafsdsd/article/details/8234736In standard C and C + +, arrays with a length of 0 are forbidden. However, in GNU C, there is a very strange usage, that is, an array of length 0, such as array[0]; many people may find it inconceivable that an array of length 0 is meaningless, but here, it represents a completely different layer of meaning, which is not portable, so If you are committed to writing portable, or slightly cross-plat

In addition to the libc and LIBM libraries, there are no other standard naming conventions for UNIX system libraries. Some system libraries on Linux may be different from the names of Libraries on UNIX platforms, which requires knowledge of the features that are included and supported by the various libraries on Linux. Table 3-2 lists some of the Linux system libraries based on the features supported. The following is a list of the library files contained in the

GNU make Guide Translation: hashao Press: this is an article about GNU make. After reading this article, you should have a basic understanding of the usage of make. Make is a tool that must be mastered by all users who want to program on Unix (including Linux) systems. If make is not used in the program you write, it means that the program you write is a personal exercise program and has no practical value

linus determines that the lab version has sufficient new features and stable performance, it is called code freeze ). At this time, the stable lab version becomes the new x. y.0, And the development is based on the new version. For example, 1.0.0 and 1.1.0 are the same. 1.0.1 is the first bug fix for version 1.0 code, while 1.1.1 is the first new function added to version 1.1. Finally, the error in 1.0.9 is fixed in 1.0, and 1.1.9 is 1.1. Finally, when the new functions increase to a sufficient

Click here to share it with you! The available C compiler on Linux is the gnu c compiler, which is based on the programming license of the Free Software Foundation and can be freely released. Gnu c has made a series of extensions for Standard C to enhance the functions of Standard C.1. Zero-length ArrayGnu c allows zero-length arrays. This feature is particularly useful when defining the header structure of

Development Environment In GNU/Linux In the work environment, virtual machines are a major issue. Therefore, we will introduce them separately before this chapter. In addition to virtual machines, there are several important things, including the editor, compiler, and the automation tool GNU make.Many working in Linux use VI or Emacs as the editor. If you are interested in trying, I suggest you do not give

access statistics from search engines: it is a very effective data source for user behavior analysis. With the development of the Internet over the years, WEB Log statistics tools have become more and more mature and feature-rich. Many of them are open source code, and AWStats is an excellent one.AWStats: Advanced Web Statistics AWStats is a fast-growing Perl-based WEB log analysis tool on Sourceforge. Compared With Webalizer, an excellent open-source log analysis tool, AWStats has the followin

The support and developers of the GNU program, especially Richard Stallman, refer to a Unix-like operating system called Linux as GNU/Linux. Linux is not a complete operating system, but a Unix-like kernel. It was developed by Linus Torvalds and others. The first version was released in 1991. The GNU program started in 1984 with the goal of completing a comple

Comparison of two stringsMy block of code#include intMY_STRCMP (const char* s1,const char * s2) {if((s1==null) | | (S2==null))return 0; while(1) {if((*s1==' + ')|| (*s2==' + ')) Break;if(*s1>*s2)return 1;if(*s1*s2)return-1; s1++; s2++; } //if(*s1==*s2==' + ') //return 0;if(*s1==' + '*s2==' + ')return 0;if(*s1>*s2)return 1;Else return-1;}intMain () {char* a="ABCdef"; char* b="ABCdef"; MY_STRCMP (A, b);return 0;}Here, the above method, unreliable, without definite intrinsic logic,Look at the sou

The GNU program, also known as the slave program, was publicly launched by Richard Stallman on September 27, 1983. Its goal is to create a set of completely free operating Systems. It has made a standard for the GNU C when writing Linux. ANSI American national standards association, the standard ANSI C standard that it made to C was later accepted by the International Standards Association as standard C so

Introduction to Unix Operating systems1.Unix historyThe Unix operating system was born in Bell Labs in the late 60US Telephone and Telegraph Corporation (T) began issuing non-commercial UNIX licenses in the middle of the 70There have been different versions of UNIX commercialization in the market since the late 702.Unix Basic PrinciplesAll objects are represented in a fileConfiguration data is saved in text formConsisting of short, single-directory programsAvoid unnecessary user interactionUse m

First of all, I have to say that installing the GNU radio on Ubuntu is really not a simple thing for beginners. I did not know from the beginning of a little to the last familiarity, understanding, the successful installation of the GNU Radio spent about 3 days a full time. Now share what you have learned in this process and hope it will help. There are generally two ways to install the

MAKE[1]: Entering directory/home/wml/src/mod_tile-master‘depbase=echo SRC/GEN_TILE.O | Sed ' s| [^/]*$|. deps/|; s|. o$| | ' `;\g++-dhave_config_h-i.-i./includes-i/usr/include/freetype2-pthread-i/usr/local/include-i/usr/local/include/ mapnik/agg-i/usr/include-i/usr/include/freetype2-i/usr/include/libxml2-i/usr/include/gdal-i/usr/include/ postgresql-i/usr/include/cairo-i/usr/include/glib-2.0-i/usr/lib/i386-linux-gnu/glib-2.0/include-i/usr/include/ Pixm

program shouldAs a stringReceived. The values in the string are separated by commas (,) or blank characters. For example, myprog-U "Arnold, Joe, Jane" (separated by commas); myprog-U "Arnold Joe Jane" (separated by blank characters) The option should appear on the command line before the operand. The getopt () force option of the UNIX version complies with this Convention. The getopt () of the GNU version does not have this Convention by default,

Recently, I am taking an online Lab Course to extract the text. The teacher asked me to use dom-tree for extraction. We need to extract HTML and convert it into XML, I am not learning gnu c programming. I just want to write it myself. It seems that HTML conversion to XML is not a matter of one or two days. I just want to know if there are any tools, the technology is quite frustrating), and suddenly found an artifact-HTML tidy. This software can help

Directory: Chapter 1 Linux and Linux programming Overview Chapter 2 set up a Development System Chapter 3 Use GNU CC Chapter 4 Use GNU make to manage projects Chapter 5 create a portable self-Configuration Software GNU autoconf Chapter 6 Comparison and merge source code files Chapter 7 Version Control Using RCS and CVS Chapter 8 debugging Chapter 9 error handling

Article Title: how to use the GNU text utility. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. This tutorial shows how to use the GNU text Utility Set to process log files, documents, structured text databases, and other textual data or content sources. The utilities in

Title: GNU celebrated its 25 th birthday and released a commemorative short film. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. GNU is 25 years old this year, so the Free Software Foundation (FSF) planned a one-month-long Party to celebrate. This Party officially star

One, GNUGNU is the "GNU's not Unix" recursive abbreviation, Stallman announced that GNU should pronounce Guh-noo (slave) to avoid confusion with the word new (note: GNU in English is intended to be the African wildebeest, the same pronunciation as new)In order to ensure that GNU software is free to "use, reproduce, modify and distribute", all

/********************************************************************* * Author:samson * date:07/11/2014 * Test PL Atform: * 3.11.0.11-generic #19-ubuntu * GNU bash, version 4.2.45 * **************************** ***************************************/With Windows and GNU Linux today, how do you clean up the junk under GNU Linux? In order to release the space tha