how to count bytes

Comment on strncpy Function Modification in linux2.6.10-Linux general technology-Linux programming and kernel information. For details, see the following. /** * Strncpy-Copy a length-limited, % NUL-terminated string * @ Dest: Where to copy the

PHP correct parsing UTF-8 strings have a need for friends can refer. The Code is as follows: Copy code $ Str = 'Today is very Happy. All decided to go to KFC to eat cool chicken wings !!! ';/*$ Str is the string to be

C language library function name: introduction function prototype: size_t fread (void * buffer, size_t size, size_tcount, FILE * stream); Function Ability: read data from a FILE stream, read count elements, each element size byte. if the call is

Summary of a UTF-8 encoding rules, according to this encoding rules, write a UTF-8 encoding parsing program, the following is the implementation of PHP, the need of friends can refer to the next Summary of a UTF-8 encoding rules, according to this

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

Reference Blog: http://www.cnblogs.com/lhb25/archive/2012/11/30/oninput-and-onpropertychange-event-for-input.html$ (function () {var limitsum = 140;//Limit number of wordsvar showwords = $ ("#showWords");//text box gets focus and event when the

This article to share the content is about PHP strpos function in-depth analysis, the content is very detailed, the need for friends can refer to, hope can help you. Overview In PHP strpos , it is often used to determine whether a string exists in

In the. NET Framework2. 0 provides the SerialPort class, which mainly realizes serial port data communication and so on. This article will I in the learning process from the network collected from the relevant information to write for your reference.

With regard to Inputstream.read (byte[] b) and Inputstream.read (byte[] b,int Off,int len) Both methods are used to read multiple bytes from the stream, and experienced programmers will find that these two methods are often You cannot read the

Definition: The checksum is an error correction field for the IP header. The checksum does not compute the encapsulated data, and UDP, TCP, and ICMP all have their own checksums. The Header checksum field contains a 16-bit twos complement and is

Recently, and classmates discussed the Memset function, take advantage of Friday idle to do a summary.The most common function of the memset function is to initialize the array (mostly 0), as#include #include using namespace std;int main (int argc,

Linux/arch/arm/kernel/call. S... Call (Sys_read) call (sys_write) call (Sys_open) call (Sys_close) ... Lifting chestnuts with Read,write interface: linux/fs/read_write.cSyscall_define3(read, unsigned int, FD, char __user *, buf, size_t,

Msmset1 /* sets the first count bytes of the memory area in buffer to character C and returns a pointer to buffer */ 2 #include string.h>3externvoid *meeset (void * Buffer,int c,int count);Gets1 /* Gets the string function read from the standard

Head-N,--lines=[-]k print the first K lines instead of the first 10;  With the leading '-', print all and the last K lines of each filetail-n,--lines=k output the Last K lines, instead of the last 10; or use-n +k to output lines starting with the

//////////////////////////////////////////////////////////////////////////////////Calculate the length of a stringint strlen1 (const char *STR){int len=0;while (*str++!= ')len++;return Len; /* This method is more efficient than the above

Original link: http://blog.chinaunix.net/uid-24103300-id-108254.htmlint strlen1 (const char *str), Char *del_char (char *str, char c);Char *delete_string (char *str,int pos,int len);const char *STRSTR1 (const char *src,const char *sub);Char *strchr1

The realization of 1:strcpyfunction function: Copy the string starting from the SRC address into a space with dest as the start address,It contains the ' + ' at the end of the SRC string.Code implementation:Implementation of the //simulation of the #

1. Consequences of "Take it for granted"Today made a very low-level error in initializing an integer array with memset all element values are set to 1. But the result is very big, very unexpected! Next, I did the code test.#include using

1 , view file bytes, number of words, number of lines WC Test.txt- --line number of words number of bytes file name 2, used to count the number of files in the current directory (the number contains the current directory)ls WC -l-C count

Text editingText filteringGrepThe grep command is a powerful text-search tool in a Linux system that uses regular expressions to search for text and print matching lines. The grep full name is global Regular expression Print, which represents the