how to count bytes

C Language:Memsetextern void *memset (void *buffer,int c,int count);#include Function: Sets the first count bytes of the memory area indicated by buffer to character CDescription: Returns a pointer to buffer.Char a[100];Memset (A, ' n ', sizeof (a));

Implementation of the Java decompression Technology GZIP ZIP BZIP2 Series implementationThere's nothing to say, it's all file operations, direct code placementPackage Com.ljh.zip;import Java.io.bufferedinputstream;import Java.io.bufferedoutputstream;

1) String manipulationstrcpy (P, p1) copy stringstrncpy (P, p1, N) copies the specified length stringStrcat (P, p1) Append stringStrncat (P, p1, N) append a specified length stringStrlen (p) Take string lengthstrcmp (P, p1) compare stringsSTRCASECMP

Prototype: extern void *memset (void *buffer, int c, int count);Function: Sets the first count bytes of the memory area indicated by buffer to character C.Contains header files:Note that this function is a string function, so be sure to include the

Description: This command counts the number of bytes, words, and lines in a given file. If the file name is not given, it is read from the standard input. The WC also gives the president count of all specified files. The word is the largest string

read () function2011-03-23 16:28:37|  Category: Linux | Tags: | Font size Big medium small subscription Readfunction to read data from an open device or file.#include ssize_t Read (int fd, void *buf, size_t count); Return value: The

Functions and methods of file processing Use the open () function to open the file in the following syntax format: Copy Code code as follows: File_handler = open (Filename,[,mode[,bufsize]] FileName is the name of the file

strcpy can only handle strings, and if you copy strings with special characters, you can only use memcpy or memmove. memcpy and Memmove functions are basically the same, but when the source string and the target string have overlap, memmove can

(1) Check the index that needs to be rebuilt Check in the following areas to determine which indexes need to be rebuilt. First, view the user index in the system table space To avoid fragmentation of the data dictionary, try to avoid the presence

First, view the user index in the system table In Oracle, the system table is created automatically when the database is installed, containing all of the database's data dictionaries, the definitions of stored procedures, packages, functions, and

Absrtact: This paper deeply analyzes the advanced hiding technologies of files, processes and modules in Linux environment, including: Linux can unload module programming technology, modify memory image directly to system call modification

Properties and methods of 20.2.2.1 Twriter objects 1. Position Properties Statement: Property position:longint; The Position property of the Twriter object represents the current position to write in the associated stream, TReader Objects also have

Realization principle of 20.1.1.2 Tstream The Tstream object is the underlying class for the stream object, which is the basis of the stream object. In order to store data objects on different media, subsequent stream objects are mainly improved on

For a PC, a floppy disk can be divided into 512 bytes of space, called a sector. A sector is the minimum granularity of a disk operation. Each read or write operation must be one or more sectors. If a disk can be used to start the operating system,

How Linux uses commands to view a few lines of a log file (middle or last lines)How Linux displays a few lines of a file (in the middle of a few lines)"One" starts at line No. 3000 and displays 1000 rows. The 3000~3999 line is displayedCat FileName |

According to this coding rule, write a UTF-8 code parsing program. below is the PHP implementation, A friend can refer to the "learning PHP & MYSQL -- character encoding (a)" introduced the conversion relationship between Unicode and UTF-8, summed

Functions and methods of file processing The open () function opens the file with the following syntax: The code is as follows: File_handler = open (Filename,[,mode[,bufsize]) FileName is the name of the file you want to manipulate, and if not

ObjectiveThis book in the past few years fragmented read two or three times, as a classic book, should repeat read and reread, since I began to write Bo, I am also ready to think of the classic good book reread carefully read it again, and put the

Files are the places where we store information. we often need to read, write, and delete files. in Python, we can use functions and methods provided by Python to conveniently operate files. Files can be opened by calling open or file. open is

Delphi operation of the streamFirst, the concept of flowFlow is simply a kind of abstract data processing tool based on object-oriented, it defines some basic operations of data processing, such as reading data, writing data, etc., programmer only