Index

Contents
Index

% * _
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

%

%, for formats

scanf, fscanf, sscanf [scan and format input]

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## *

*, in input fields

scanf, fscanf, sscanf [scan and format input]

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## _

__ELASTERROR

strerror [convert error number to string]

_calloc_r

calloc [allocate space for arrays]

_close_r

Reentrant covers for OS subroutines

_fdopen_r

fdopen [turn open file into a stream]

_fopen_r

fopen [open a file]
Reentrancy

_fork_r

Reentrant covers for OS subroutines

_free_r

malloc, realloc, free [manage memory]

_fstat_r

Reentrant covers for OS subroutines

_getchar_r

getchar [read a character (macro)]

_gets_r

gets [get character string]

_impure_ ptr

Reentrancy

_impure_ptr

Reentrancy

_IOFBF

setvbuf [specify file or stream buffering]

_IOLBF

setvbuf [specify file or stream buffering]

_IONBF

setvbuf [specify file or stream buffering]

_localeconv_r

setlocale, localeconv [select or query locale]

_lseek_r

Reentrant covers for OS subroutines

_malloc_r

malloc, realloc, free [manage memory]

_mkstemp_r

mktemp, mkstemp [generate unused file name]

_mktemp_r

mktemp, mkstemp [generate unused file name]

_open_r

Reentrant covers for OS subroutines

_perror_r

perror [print an error message on standard error]

_putchar_r

putchar [write a character (macro)]

_puts_r

puts [write a character string]

_raise_r

signal [specify handler subroutine for a signal]
raise [send a signal]

_rand_r

rand, srand [pseudo-random numbers]

_read_r

Reentrant covers for OS subroutines

_realloc_r

malloc, realloc, free [manage memory]

_reent

Reentrancy

_remove_r

remove [delete a file's name]

_rename_r

rename [rename a file]

_sbrk_r

Reentrant covers for OS subroutines

_setlocale_r

setlocale, localeconv [select or query locale]

_signal_r

signal [specify handler subroutine for a signal]

_srand_r

rand, srand [pseudo-random numbers]

_stat_r

Reentrant covers for OS subroutines

_strtod_r

strtod, strtodf [string to double or float]

_strtol_r

strtol [string to long]

_strtoul_r

strtoul [string to unsigned long]

_tempnam_r

tmpnam, tempnam [name for a temporary file]

_tmpfile_r

tmpfile [create a temporary file]

_tmpnam_r

tmpnam, tempnam [name for a temporary file]

_unlink_r

Reentrant covers for OS subroutines

_user_ strerror

strerror [convert error number to string]

_vfprintf_r

vprintf, vfprintf, vsprintf [format argument list]

_vprintf_r

vprintf, vfprintf, vsprintf [format argument list]

_vsprintf_r

vprintf, vfprintf, vsprintf [format argument list]

_wait_r

Reentrant covers for OS subroutines

_write_r

Reentrant covers for OS subroutines

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## A

a (appending data)

fopen [open a file]

ab (append binary)

fopen [open a file]

abort

abort [abnormal termination of a program]

abort[abnormal termination of a program]

abort [abnormal termination of a program]

abs

abs [integer absolute value (magnitude)]

abs[integer absolute value (magnitude)]

abs [integer absolute value (magnitude)]

ANSI standards

ANSI-standard macros, stdarg.h

ANSI-standard macros, stdarg.h

ANSI-standard macros, stdarg.h

ap

va_end [abandon a variable argument list]

asctime

asctime [format time as string]

asctime[format time as string]

asctime [format time as string]

asctime_r

asctime [format time as string]

assert

assert [macro for debugging diagnostics]

assert[macro for debugging diagnostics]

assert[macro for debugging diagnostics]

atexit

atexit [request execution of functions at program exit]

atexit[request execution of functions at program exit]

atexit [request execution of functions at program exit]

atof

atof, atoff [string to double or float]

atof, atoff[string to double or float]

atof, atoff [string to double or float]

atoff

atof, atoff [string to double or float]

atoi

atoi, atol [string to integer]

atoi, atol[string to integer]

atoi, atol [string to integer]

atol

atoi, atol [string to integer]

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## B

bare board system

System calls

bcmp

bcmp [compare two memory areas]

bcmp[compare two memory areas]

bcmp [compare two memory areas]

bcopy

bcopy [copy memory regions]

bcopy[copy memory regions]

bcopy [copy memory regions]

bsearch

bsearch [binary search]

bsearch[binary search]

bsearch [binary search]

BUFSIZ

setbuf [specify full buffering for a file or stream]

bzero

bzero [initialize memory to zero]

bzero[initialize memory to zero]

bzero [initialize memory to zero]

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## C

C subroutine library

System calls

calloc

calloc [allocate space for arrays]

calloc [allocate space for arrays]

calloc [allocate space for arrays]

character mappings

Character type macros and functions (ctype.h)

character type functions

Character type macros and functions (ctype.h)

character type macros

Character type macros and functions (ctype.h)

Character type macros and functions (ctype.h)

Character type macros and functions (ctype.h)

characters, classifying

Character type macros and functions (ctype.h)

clearerr

clearerr [clear file or stream error indicator]

clearerr [clear file or stream error indicator]

clearerr [clear file or stream error indicator]

clock

clock [cumulative processor time]

clock [cumulative processor time]

clock [cumulative processor time]

clock_t

Time functions (time.h)

CLOCKS_PER_SEC

clock [cumulative processor time]

ctime

ctime [convert time to local and format as string]

ctime [convert time to local and format as string]

ctime [convert time to local and format as string]

ctime_r

ctime [convert time to local and format as string]

ctype.h

Character type macros and functions (ctype.h)

current position for a file

fgetpos [record position in a stream or file]

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## D

data structure

Traditional macros, varargs.h

Daylight Savings Time flag

Time functions (time.h)

Definitions for OS interface

Definitions for OS interface

difftime

difftime [subtract two times]

difftime[subtract two times]

difftime [subtract two times]

directives

scanf, fscanf, sscanf [scan and format input]

div

div [divide two integers]

div[divide two integers]

div [divide two integers]

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## E

ecvt

ecvt, ecvtf, fcvt, fcvtf [double or float to string]

ecvt, ecvtf, fcvt, fcvtf[double or float to string]

ecvt, ecvtf, fcvt, fcvtf [double or float to string]

ecvtbuf

ecvt, ecvtf, fcvt, fcvtf [double or float to string]
ecvtbuf, fcvtbuf [double or float to string]

ecvtbuf, fcvtbuf[double or float to string]

ecvtbuf, fcvtbuf [double or float to string]

ecvtf

ecvt, ecvtf, fcvt, fcvtf [double or float to string]

EINVAL

fseek [set file position]

ellipsis

ANSI-standard macros, stdarg.h

embedded targets

signal [specify handler subroutine for a signal]

environ

getenv [look up environment variable]

ERANGE

strtod, strtodf [string to double or float]

errno variable

Reentrancy

errnum

strerror [convert error number to string]

ESPIPE

fgetpos [record position in a stream or file]

exit

exit [end program execution]

exi t[end program execution]

exit [end program execution]

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## F

fclose

fclose [close a file]

fclose[close a file]

fclose [close a file]

fcvt

ecvt, ecvtf, fcvt, fcvtf [double or float to string]

fcvtbuf

ecvt, ecvtf, fcvt, fcvtf [double or float to string]
ecvtbuf, fcvtbuf [double or float to string]

fcvtf

ecvt, ecvtf, fcvt, fcvtf [double or float to string]

fdopen

fdopen [turn open file into a stream]

fdopen [turn open file into a stream]

fdopen [turn open file into a stream]

feof

feof [test for end of file]
clearerr [clear file or stream error indicator]

feof [test for end of file]

feof [test for end of file]

ferror

ferror [test whether read/write error has occurred]
clearerr [clear file or stream error indicator]

ferror[test whether read/write error has occurred]

ferror [test whether read/write error has occurred]

fflush

fflush [flush buffered file output]

fflush [flush buffered file output]

fflush [flush buffered file output]

fgetc

fgetc [get a character from a file or stream]

fgetc [get a character from a file or stream]

fgetc [get a character from a file or stream]

fgetpos

fgetpos [record position in a stream or file]

fgetpos [record position in a stream or file]

fgetpos [record position in a stream or file]

fgets

fgets [get character string from a file or stream]

fgets [get character string from a file or stream]

fgets [get character string from a file or stream]

file name

mktemp, mkstemp [generate unused file name]

fiprintf

fiprintf [format output to file (integer only)]

fiprintf [format output to file (integer only)]

fiprintf [format output to file (integer only)]

fixed argument

Variable argument lists

flags

printf, fprintf, sprintf [format output]

float numbers

gvcvt, gcvtf [format double or float as string]

fopen

fopen [open a file]

fopen [open a file]

fopen [open a file]

fprintf

printf, fprintf, sprintf [format output]

fputc

putc [write a character (macro)]
fputc [write a character on a stream or file]

fputc [write a character on a stream or file]

fputc [write a character on a stream or file]

fputs

fputs [write a character string in a file or stream]

fputs[write a character string in a file or stream]

fputs [write a character string in a file or stream]

fread

fread [read array elements from a file]

fread[read array elements from a file]

fread [read array elements from a file]

free

malloc, realloc, free [manage memory]

freopen

freopen[open a file using an existing file descriptor]

freopen [open a file using an existing file descriptor]

freopen [open a file using an existing file descriptor]

fscanf

scanf, fscanf, sscanf [scan and format input]

fseek

fseek [set file position]

fseek [set file position]

fseek [set file position]

fsetpos

fsetpos [restore position of a stream or file]

fsetpos [restore position of a stream or file]

fsetpos [restore position of a stream or file]

ftell

ftell [return position in a stream or file]

ftell [return position in a stream or file]

ftell [return position in a stream or file]

functions, non-reentrant

Reentrancy

functions, reentrant

Reentrancy

fwrite

fwrite[write array elements]

fwrite[write array elements]

fwrite[write array elements]

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## G

gcvt

gvcvt, gcvtf [format double or float as string]

gcvtf

gvcvt, gcvtf [format double or float as string]

getc

getc [read a character (macro)]

getc [read a character (macro)]

getc [read a character (macro)]

getchar

getchar [read a character (macro)]

getchar [read a character (macro)]

getchar [read a character (macro)]

getenv

getenv [look up environment variable]

getenv[look up environment variable]

getenv [look up environment variable]

gets

gets [get character string]

gets [get character string]

gets [get character string]

GMT

gmtime [convert time to UTC traditional form]

gmtime

gmtime [convert time to UTC traditional form]

gmtime [convert time to UTC traditional form]

gmtime [convert time to UTC traditional form]

Greenwich Mean time

gmtime [convert time to UTC traditional form]

Gregorian time, representing

Time functions (time.h)

gvcvt, gcvtf [format double or float as string]

gvcvt, gcvtf [format double or float as string]

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## H

handlers

Signal handling (signal.h)

HUGE_VAL

strtod, strtodf [string to double or float]

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## I

index

index [search for character in string]

index [search for character in string]

index [search for character in string]

Input and output (stdio.h)

Input and output (stdio.h)

input/output streams

Input and output (stdio.h)

Internet Worm of 1988

gets [get character string]

invalid file position

fseek [set file position]

iprintf

iprintf [write formatted output (integer only)]

iprintf [write formatted output (integer only)]

iprintf [write formatted output (integer only)]

isalnum

isalnum [alphanumeric character predicate]

isalnum [alphanumeric character predicate]

isalnum [alphanumeric character predicate]

isalpha

isalpha [alphabetic character predicate]

isalpha [alphabetic character predicate]

isalpha [alphabetic character predicate]

isascii

isascii [ASCII character predicate]

isascii [ASCII character predicate]

isascii [ASCII character predicate]

iscntrl

iscntrl [control character predicate]

iscntrl [control character predicate]

iscntrl [control character predicate]

isdigit

isdigit [decimal digit predicate]

isdigit [decimal digit predicate]

isdigit [decimal digit predicate]

islower

islower [lower-case character predicate]

islower [lower-case character predicate]

islower [lower-case character predicate]

isprint

isprint, isgraph [printable character predicates]

isprint, isgraph [printable character predicates]

isprint, isgraph [printable character predicates]

ispunct

ispunct [punctuation character predicate]

ispunct [punctuation character predicate]

ispunct [punctuation character predicate]

isspace

isspace [whitespace character predicate]

isspace [whitespace character predicate]

isspace [whitespace character predicate]

isupper

isupper [uppercase character predicate]

isupper [uppercase character predicate]

isupper [uppercase character predicate]

isxdigit

isxdigit [hexadecimal digit predicate]

isxdigit [hexadecimal digit predicate]

isxdigit [hexadecimal digit predicate]

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## L

labs

labs [long integer absolute value]

labs [long integer absolute value]

labs [long integer absolute value]

LC_

setlocale, localeconv [select or query locale]

LC_COLLATE

strcoll [locale specific character string compare]

ldiv

ldiv [divide two long integers]

ldiv [divide two long integers]

ldiv [divide two long integers]

libc.a

System calls

locale

Locale (locale.h)

Locale (locale.h)

Locale (locale.h)

Locale functions

Reentrancy

locale.h

Locale (locale.h)

localeconv

setlocale, localeconv [select or query locale]

localtime

localtime [convert time to local representation]

localtime [convert time to local representation]

localtime [convert time to local representation]

localtime_r

localtime [convert time to local representation]

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## M

malloc

malloc, realloc, free [manage memory]

malloc, realloc, free [manage memory]

malloc, realloc, free [manage memory]

managing areas of memory

Strings and memory (string.h)

managing files

Input and output (stdio.h)

managing input/output streams

Input and output (stdio.h)

mbtowc

mmbtowc [minimal multibyte to wide char converter]

memchr

memchr [find character in memory]

memchr [find character in memory]

memchr [find character in memory]

memcmp [compare two memory areas]

memcmp [compare two memory areas]

memcpy

memcpy [copy memory regions]

memcpy [copy memory regions]

memcpy [copy memory regions]

memmove

memmove [move possibly overlapping memory]

memmove [move possibly overlapping memory]

memmove [move possibly overlapping memory]

memset

memset [set an area of memory]

memset [set an area of memory]

memset [set an area of memory]

miscellaneous functions

Miscellaneous macros and functions

miscellaneous macros

Miscellaneous macros and functions

Miscellaneous macros and functions

Miscellaneous macros and functions

miscellaneous routines

Miscellaneous macros and functions

mkstemp

mktemp, mkstemp [generate unused file name]

mktemp

mktemp, mkstemp [generate unused file name]

mktemp, mkstemp [generate unused file name]

mktemp, mkstemp [generate unused file name]

mktime

mktime [convert time to arithmetic representation]

mktime[convert time to arithmetic representation]

mktime [convert time to arithmetic representation]

mmbtowc [minimal multibyte to wide char converter]

mmbtowc [minimal multibyte to wide char converter]

multibyte character sequences

mmbtowc [minimal multibyte to wide char converter]

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## O

offset

fseek [set file position]

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## P

parameter list

ANSI-standard macros, stdarg.h

pattern

scanf, fscanf, sscanf [scan and format input]

perror

perror [print an error message on standard error]

perror [print an error message on standard error]

perror [print an error message on standard error]

position

ftell [return position in a stream or file]

prec

printf, fprintf, sprintf [format output]

printf

Variable argument lists
printf, fprintf, sprintf [format output]

printf, fprintf, sprintf [format output]

printf, fprintf, sprintf [format output]

putc

putc [write a character (macro)]

putc[write a character (macro)]

putc [write a character (macro)]

putchar

putchar [write a character (macro)]

putchar [write a character (macro)]

putchar[write a character (macro)]

puts

puts [write a character string]

puts [write a character string]

puts [write a character string]

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## Q

qsort

qsort [sort an array]

qsort[sort an array]

qsort [sort an array]

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## R

r (reading data)

fopen [open a file]

raise

raise [send a signal]
signal [specify handler subroutine for a signal]

raise [send a signal]

raise [send a signal]

raising a signal

Signal handling (signal.h)

rand

rand, srand [pseudo-random numbers]

rand, srand [pseudo-random numbers]

rand, srand [pseudo-random numbers]

RAND_MAX

rand, srand [pseudo-random numbers]

random seed

rand, srand [pseudo-random numbers]

rb (read binary)

fopen [open a file]

realloc

malloc, realloc, free [manage memory]

reent.h

Reentrancy

reentrancy

Reentrancy
Reentrancy

Reentrant covers for OS subroutines

Reentrant covers for OS subroutines

remove

remove [delete a file's name]

remove [delete a file's name]

remove [delete a file's name]

rename

rename [rename a file]

rename[rename a file]

rename [rename a file]

rewind

rewind [reinitialize a file or stream]

rewind [reinitialize a file or stream]

rewind [reinitialize a file or stream]

rindex

rindex [reverse search for character in string]

rindex [reverse search for character in string]

rindex [reverse search for character in string]

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## S

scanf

scanf, fscanf, sscanf [scan and format input]

scanf, fscanf, sscanf [scan and format input]

scanf, fscanf, sscanf [scan and format input]

SEEK_CUR

fseek [set file position]

SEEK_END

fseek [set file position]

SEEK_SET

fseek [set file position]

setbuf

setbuf [specify full buffering for a file or stream]

setbuf [specify full buffering for a file or stream]

setbuf [specify full buffering for a file or stream]

setlocale

setlocale, localeconv [select or query locale]

setlocale, localeconv [select or query locale]

setlocale, localeconv [select or query locale]

setvbuf

setvbuf [specify file or stream buffering]

setvbuf [specify file or stream buffering]

setvbuf [specify file or stream buffering]

SIG_DFL

signal [specify handler subroutine for a signal]
Signal handling (signal.h)

SIG_ERR

Signal handling (signal.h)
signal [specify handler subroutine for a signal]

SIG_IGN

signal [specify handler subroutine for a signal]
raise [send a signal]
Signal handling (signal.h)

SIGABRT

Signal handling (signal.h)

SIGFPE

Signal handling (signal.h)

SIGILL

Signal handling (signal.h)

SIGINT

Signal handling (signal.h)

signal

signal [specify handler subroutine for a signal]

signal functions

Reentrancy

Signal handling (signal.h)

Signal handling (signal.h)

signal[specify handler subroutine for a signal]

signal [specify handler subroutine for a signal]

SIGSEGV

Signal handling (signal.h)

SIGTERM

Signal handling (signal.h)

siprintf

siprintf [write formatted output (integer only)]

siprintf[write formatted output (integer only)]

siprintf [write formatted output (integer only)]

size

scanf, fscanf, sscanf [scan and format input]
printf, fprintf, sprintf [format output]

size_t

Time functions (time.h)

sprintf

printf, fprintf, sprintf[format output]

srand

rand, srand [pseudo-random numbers]

sscanf

scanf, fscanf, sscanf [scan and format input]

Standard utility functions (stdlib.h)

Standard utility functions (stdlib.h)

stdarg.h

Variable argument lists
Traditional macros, varargs.h

stderr

Input and output (stdio.h)

stdin

Input and output (stdio.h)

stdio functions

Reentrancy

stdio variables

Reentrancy

stdio.h

Input and output (stdio.h)

stdlib functions

Reentrancy

stdlib.h

Standard utility functions (stdlib.h)

stdout

Input and output (stdio.h)

strcat

strcat [concatenate strings]

strcat [concatenate strings]

strcat [concatenate strings]

strchr

strchr [search for character in string]

strchr[search for character in string]

strchr [search for character in string]

strcmp

strcmp [character string compare]

strcmp[character string compare]

strcmp [character string compare]

strcoll

strcoll [locale specific character string compare]

strcoll [locale specific character string compare]

strcoll [locale specific character string compare]

strcpy

strcpy [copy string]

strcpy[copy string]

strcpy [copy string]

strcspn

strcspn [count chars not in string]

strcspn[count chars not in string]

strcspn [count chars not in string]

strerror

strerror [convert error number to string]

strerror [convert error number to string]

strerror [convert error number to string]

strftime

strftime [flexible calendar time formatter]

strftime [flexible calendar time formatter]

strftime [flexible calendar time formatter]

string functions

Reentrancy

string.h

Strings and memory (string.h)

string-handling functions

Strings and memory (string.h)

Strings and memory (string.h)

Strings and memory (string.h)

strlen

trlen [character string length]

strncat

strncat [concatenate strings]

strncat [concatenate strings]

strncat [concatenate strings]

strncmp

strncmp [character string compare]

strncmp [character string compare]

strncmp [character string compare]

strncpy

strncpy [counted copy string]

strncpy[counted copy string]

strncpy [counted copy string]

strpbrk

strpbrk [find chars in string]

strpbrk [find chars in string]

strpbrk [find chars in string]

strrchr

strrchr [reverse search for character in string]

strrchr [reverse search for character in string]

strrchr [reverse search for character in string]

strspn

strspn [find initial match]

strspn [find initial match]

strspn [find initial match]

strstr

strstr [find string segment]

strstr[find string segment]

strstr [find string segment]

strtod

strtod, strtodf [string to double or float]

strtod, strtodf [string to double or float]

strtod, strtodf [string to double or float]

strtodf

strtod, strtodf [string to double or float]

strtok

strtok [get next token from a string]

strtok [get next token from a string]

strtok [get next token from a string]

strtok_r

strtok [get next token from a string]

strtol

strtol [string to long]

strtol[string to long]

strtol [string to long]

strtoul

strtoul [string to unsigned long]

strtoul[string to unsigned long]

strtoul [string to unsigned long]

strxfrm

strxfrm [transform string]

strxfrm [transform string]

strxfrm [transform string]

subroutine calls

System calls

sys/signal.h

Signal handling (signal.h)

system

system [execute command string]

System calls

System c

Reentrancy

system memory, managing

malloc, realloc, free [manage memory]

system[execute command string]

system [execute command string]

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## T

tempnam

tmpnam, tempnam [name for a temporary file]

time

time[get current calendar time (as single number)]

time functions

Reentrancy

Time Functions (time.h)

Time functions (time.h)

time.h

Time functions (time.h)

time[get current calendar time (as single number)]

time[get current calendar time (as single number)]

time_t

Time functions (time.h)

tm

Time functions (time.h)

tm_hour

Time functions (time.h)

tm_isdst

Time functions (time.h)

tm_mday

Time functions (time.h)

tm_min

Time functions (time.h)

tm_mon

Time functions (time.h)

tm_sec

Time functions (time.h)

tm_wday

Time functions (time.h)

tm_yday

Time functions (time.h)

tm_year

Time functions (time.h)

TMP_MAX

tmpnam, tempnam [name for a temporary file]

TMPDIR

tmpnam, tempnam [name for a temporary file]

tmpfile

tmpfile [create a temporary file]

tmpfile [create a temporary file]

tmpfile [create a temporary file]

tmpnam

tmpnam, tempnam [name for a temporary file]

tmpnam, tempnam[name for a temporary file]

tmpnam, tempnam [name for a temporary file]

toascii

toascii [force integers to ASCII range]

toascii[force integers to ASCII range]

toascii [force integers to ASCII range]

tolower

tolower [translate characters to lower case]

tolower [translate characters to lower case]

tolower [translate characters to lower case]

toupper

toupper [translate characters to upper case]

toupper [translate characters to upper case]

toupper [translate characters to upper case]

Traditional macros, varargs.h

Traditional macros, varargs.h

trlen [character string length]

trlen[character string length]

two-character sequences

strftime [flexible calendar time formatter]

type

scanf, fscanf, sscanf [scan and format input]
printf, fprintf, sprintf [format output]

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## U

unctrl

unctrl [translate characters to upper case]

unctrl[translate characters to upper case]

unctrl [translate characters to upper case]

unctrllen

unctrl [translate characters to upper case]

Universal coordinated time

gmtime [convert time to UTC traditional form]

UTC

gmtime [convert time to UTC traditional form]

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## V

va_alist

va_start [initialize variable argument list]

va_arg

va_arg [extract a value from argument list]
ANSI-standard macros, stdarg.h
va_arg [extract a value from argument list]

va_arg [extract a value from argument list]

va_arg [extract a value from argument list]
va_arg [extract a value from argument list]

va_dcl

va_dcl [declare variable arguments]

va_dcl [declare variable arguments]

va_dcl [declare variable arguments]

va_end

ANSI-standard macros, stdarg.h
va_end [abandon a variable argument list]

va_end [abandon a variable argument list]

va_end [abandon a variable argument list]

va_end [abandon variable argument list]

va_end [abandon variable argument list]

va_list

Traditional macros, varargs.h
ANSI-standard macros, stdarg.h

va_start

va_start [initialize variable argument list]
va_start [initialize variable argument list]
ANSI-standard macros, stdarg.h

va_start [initialize variable argument list]

va_start [initialize variable argument list]
va_start [initialize variable argument list]

varargs.h

Variable argument lists
Traditional macros, varargs.h

variable argument

Traditional macros, varargs.h
Variable argument lists

Variable argument lists

Variable argument lists

vfprintf

vprintf, vfprintf, vsprintf [format argument list]

volatile sig_atomic_t

signal[specify handler subroutine for a signal]

vprintf

vprintf, vfprintf, vsprintf [format argument list]

vprintf, vfprintf, vsprintf [format argument list]

vprintf, vfprintf, vsprintf [format argument list]

vsprintf

vprintf, vfprintf, vsprintf [format argument list]

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## W

w (writing data)

fopen [open a file]

wb (write binary)

fopen [open a file]

wctomb

wctomb [minimal wide char to multibyte converter]

wctomb [minimal wide char to multibyte converter]

wctomb [minimal wide char to multibyte converter]

whence

fseek [set file position]

width

printf, fprintf, sprintf [format output]
scanf, fscanf, sscanf [scan and format input]

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