man strtok

Char *strtok (char *str, const char *delim) The data source is modified. External lock is thread safe (strtok execution ends and unlocks another strtok loop knowing work is done)The static external variable char*old in the Strtok implementation file

Proc file system The proc file system is a virtual file system. It uses the man proc command to describe proc as a pseudo file system. It provides some kernel data structure interfaces. Generally, the file system is mounted to the/proc Directory,

10. Use the # connector in a Linux environment in combination with ARGs... The usage of #,## is described in [1], and the usage of va_list is described in [2. [1] http://www.cnblogs.com/mydomain/archive/2010/09/25/1834917.html [2] http://www.cnblogs.

In python, if the Unix timestamp of the current time is required, I particularly like this: import timetimestr = time.time()timestamp = int(timestr.split('.')[0]) Here, I like the split function very much. It is available in Java, C #, and python.

PHPHeader("Content-type:text/html;charset=utf-8");/**1,ord () returns the ASCII value of the first character of the string 2,strcasecmp () a case-insensitive comparison of two strings 3,strcmp () case-sensitive comparisons between two strings

There are a lot of string functions in PHP Oh, it is said that PHP is composed of functions, which allows developers to speed up the development of the site Oh, well, crap don't say much. Let's take a look at my friends for free PHP string function

1. Estimated time and actual time spent in the table 　　　　　　　　　　　　　　　The ideal is too plump to show too much backbone PSP2.1 Personal Software Process Stages Time Planning Plan

File IO is not cached, and each read and write calls the corresponding system call in the kernel.File IO common functions:Open, close, read, write, lseekFor the kernel, all open files have file descriptor references.The file descriptor is a

Pretreatment#和 # #是两个预处理运算符 (note the operator that is not a C-language expression), #后接形参 (the middle can be a space) for creating string literals; # #用于连接两个形参.Functional macro definitions can also have variable parameters, which is also used ...

1.For file operations, although they are implemented through function calls, they can be divided into two categories: system calls and library functions.2.In Linux, almost everything can be seen as a file.This means that ordinary programs can use