- strspn
- strstr
- strtod
- strtof
- strtoimax
- strtok
- strtok_r
- strtol
- strtold
- strtoll
- strtoq
- strtoul
- strtoull
- strtoumax
- strtouq
- strverscmp
- strxfrm
- swab
- sysconf
- syslog
- system
- sysv_signal
- tan
- tanf
- tanh
- tanhf
- tanhl
- tanl
- tcgetpgrp
- tcgetsid
- tcsetpgrp
- tdelete
- tdestroy
- telldir
- tempnam
- termios
- tfind
- tgamma
- tgammaf
- tgammal
- timegm
- timelocal
- timeradd
- timerclear
- timercmp
- timerisset
- timersub
- timezone
- tmpfile
- tmpnam
- tmpnam_r
- toascii
- tolower
- tolower_l
- toupper
- toupper_l
- towctrans
- towlower
- towlower_l
- towupper
- towupper_l
- trunc
- truncf
- truncl
- tsearch
- ttyname
- ttyname_r
- ttyslot
- twalk
- tzname
MAN (3)
Функции стандартной библиотеки С