C language 2

Continue to write some content about the header file of the C language. Some standard header files of the C language can also be written and used. This will help you write programs in the future.

Standard C header files

Header files defined in iso c (24 items)

<Assert. h> the validators assert that <complex. h> supports the plural arithmetic operation <ctype. h> character type

<Errno. h> Error Code <fenv. h> floating point environment <float. h> floating point constant

<Inttypes. h> integer format conversion <iso646.h> substitutes the relational operator macro <limits. h> to implement Constants

<Locale. h> local class <math. h> mathematical constant <setjmp. h> non-local goto

<Signal. h> signal <stdarg. h> variable parameter table <stdbool. h> boolean type and value

<Stddef. h> standard definition <stdint. h> integer <stdio. h> standard I/O Library

<Stdlib. h> practical library functions <string. h> string Operations <tgmath. h> General Mathematical macros

<Time. h> time and date <wchar. h> wide characters support <wctype. h> wide character classification and ing

POSIX standard defined mandatory header files (26 items)

<Dirent. h> directory item <fcntl. h> file Control <fnmatch. h> file name matching type

<Glob. h> path name pattern matching type <grp. h> group file <netdb. h> Network Database Operations

<Pwd. h> Password File <regex. h> Regular Expression <tar. h> tar archive Value

<Termios. h> terminal I/O <unistd. h> symbolic constant <utime. h> file time

<Wordexp. h> word extension type <arpa/inet. h> Internet definition <net/if. h> socket local Interface

<Netinet/in. h> memory management statement of the Internet address family <netinet/tcp. h> Transport Control Protocol <sys/mman. h>

<Sys/select. h> select function <sys/socket. h> socket interface <sys/stat. h> File status

<Sys/times. h> process time <sys/types. h> Basic System Data Type <sys/un. h> UNIX domain socket Definition

<Sys/utsname. h> system name <sys/wait. h> Process Control

POSIX standard-defined XSI extension header file (26 items)

<Cpio. h> cpio archive value <dlfcn. h> dynamic link <fmtmsg. h> Message Display Structure

<Ftw. h> file tree roaming <iconv. h> code set conversion utility <langinfo. h> Language Information constant

<Libgen. h> schema matching function definition <monetary. h> currency type <ndbm. h> database operations

<Nl_types.h> message Category <poll. h> poll function <search. h> search table

<Strings. h> string operation <syslog. h> System Error Log Record <ucontext. h> User Context

<Ulimit. h> User restrictions <utmpx. h> User Account database <sys/ipc. h> IPC

<Sys/msg. h> Message Queue <sys/resource. h> resource operation <sys/sem. h> semaphore

<Sys/shm. h> shared storage <sys/statvfs. h> File System Information <sys/time. h> time type

<Sys/timeb. h> additional time <sys/uio. h> vector I/O operation

POSIX standard-defined optional Header files (8 items)

<Aio. h> asynchronous I/O <mqueue. h> Message Queue <pthread. h> thread

<Sched. h> run the <semaphore. h> semaphores <spawn. h> real-time spawn Interface

<Stropts. h> xsi streams interface <trace. h> time tracking

54 Standard C ++ header files, 16 of which are used to build STL, and 3 are not mandatory)

<Algorithm> General STL algorithm <bitset> STL bit set container <cassert> is used to execute assertions when the program is running.

<Cctype> Character Processing <cerrno> Error Code <cfloat> is used to test floating point type attributes.

<Ciso646> ISO646 Variant Character Set <climits> test Integer type attribute <clocale> localization function

<Cmath> mathematical function <complex> plural class <csetjmp> executes non-Internal goto statements

The <csignal> signal <cstdarg> function for changing the number of access parameters <cstddef> is used to define practical types and macros.

<Cstdio> input/output <cstdlib> miscellaneous functions and memory allocation <cstring> string

<Ctime> time <cwchar> wide character processing and input/output <cwctype> wide character Classification

<Deque> STL double-end queue container <exception> exception handling class <fstream> file stream

<Functional> STL function object <iomanip> parameterized input/output <ios> Basic Input/Output support

<Iosfwd> input/output pre-declaration <iostream> Data Stream Input/Output <istream> basic input stream

<Iterator> traversal sequence class <limits> maximum constants of various data types <list> STL linear list container

<Locale> supports <map> STL ing container <memory> dedicated memory distributor

<New> basic memory allocation and release <numeric> General Digital Operations <ostream> Basic output stream

<Queue> STL queue container <set> STL collection container <sstream> string-based stream

<Stack> STL stack container <stdexcept> standard exception class <streambuf> buffer class of iostream

<String> stream class of the string type <strstream> non-Memory Character Sequence <typeinfo> runtime type identifier

<Utility> STL common template class <valarray> supports value array classes and template classes <vector> STL dynamic array containers

The standard C ++ header file (3) is not required

<Hash_map>

Summary of some C Language header files is helpful for compiling. When you are fine, you can also look at the C language programming tutorial, read more and summarize, No matter what content you learn will be helpful.