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【转】ISO C和POSIX头文件

ISO C标准定义的头文件(24项)
<assert.h>       ----------------------   验证程序断言
<complex.h>    ----------------------   支持复数算术运算
<ctype.h>        ----------------------   字符类型
<errno.h>        ----------------------   出错码
<fenv.h>          ----------------------   浮点环境
<float.h>          ----------------------   浮点常量
<inttypes.h>    ----------------------   整型格式转换
<iso646.h>      ----------------------   替代关系操作符宏
<limits.h>         ----------------------   实现常量
<locale.h>       ----------------------   局部类别
<math.h>         ----------------------   数学常量
<setjmp.h>      ----------------------   非局部goto
<signal.h>       ----------------------   信号
<stdarg.h>      ----------------------   可变参数表
<stdbool.h>     ----------------------   布尔类型和值
<stddef.h>       ----------------------   标准定义
<stdint.h>        ----------------------   整型
<stdio.h>         ----------------------   标准I/O库
<stdlib.h>        ----------------------   实用程序库函数
<string.h>       ----------------------   字符串操作
<tgmath.h>     ----------------------   通用类型数学宏
<time.h>         ----------------------   时间和日期
<wchar.h>      ----------------------   扩展的多字节和宽字符支持
<wctype.h>     ----------------------   宽字符分类和映射支持
 
POSIX标准定义的必须的头文件(26项)
<dirent.h>      ----------------------   目录项
<fcntl.h>         ----------------------   文件控制
<fnmatch.h>   ----------------------   文件名匹配类型
<glob.h>         ----------------------   路径名模式匹配类型
<grp.h>          ----------------------   组文件
<netdb.h>      ----------------------   网络数据库操作
<pwd.h>         ----------------------   口令文件
<regex.h>      ----------------------   正则表达式
<tar.h>           ----------------------   tar归档值
<termios.h>    ----------------------   终端I/O
<unistd.h>      ----------------------   符号常量
<utime.h>       ----------------------   文件时间
<wordexp.h>   ----------------------   字扩展类型
<arpa/inet.h>  ----------------------   Internet定义
<net/if..h>       ----------------------   套接字本地接口
<netinet/in.h> ----------------------   Internet地址族
<netinet/tcp.h>----------------------   传输控制协议定义
<sys/mman.h>----------------------   内存管理声明
<sys/select.h>----------------------   select函数
<sys/socket.h>----------------------   套接字接口
<sys/stat.h>    ----------------------   文件状态
<sys/times.h>  ----------------------   进程时间
<sys/types.h>  ----------------------   基本系统数据类型
<sys/un.h>      ----------------------   UNIX域套接字定义
<sys/utsname.h>----------------------系统名
<sys/wait.h>    ----------------------   进程控制
 
POSIX标准定义的XSI扩展头文件(26项)
<cpio.h>          ----------------------   cpio归档值
<dlfcn.h>         ----------------------   动态链接
<fmtmsg.h>     ----------------------   消息显示结构
<ftw.h>            ----------------------   文件树漫游
<iconv.h>        ----------------------   代码集转换实用程序
<langinfo.h>    ----------------------   语言信息常量
<libgen.h>       ----------------------   模式匹配函数定义
<monetary.h>  ----------------------   货币类型
<ndbm.h>        ----------------------   数据库操作
<nl_types.h>   ----------------------   消息类别
<poll.h>           ----------------------   轮询函数
<search.h>      ----------------------   搜索表
<strings.h>      ----------------------   字符串操作
<syslog.h>      ----------------------   系统出错日志记录
<ucontext.h>   ----------------------   用户上下文
<ulimit.h>        ----------------------   用户限制
<utmpx.h>       ----------------------   用户帐户数据库
<sys/ipc.h>      ----------------------   IPC
<sys/msg.h>    ----------------------   消息队列
<sys/resource.h>-------------------   资源操作
<sys/sem.h>    ----------------------   信号量
<sys/shm.h>    ----------------------   共享存储
<sys/statvfs.h>----------------------   文件系统信息
<sys/time.h>    ----------------------   时间类型
<sys/timeb.h>  ----------------------   附加的日期和时间定义
<sys/uio.h>      ----------------------   矢量I/O操作
 
POSIX标准定义的可选头文件(8项)
<aio.h>            ----------------------   异步I/O
<mqueue.h>    ----------------------   消息队列
<pthread.h>    ----------------------   线程
<sched.h>       ----------------------   执行调度
<semaphore.h>---------------------   信号量
<spawn.h>       ----------------------   实时spawn接口
<stropts.h>      ----------------------   XSI STREAMS接口
<trace.h>         ----------------------   时间跟踪
 

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