C
C keywords
_Complex
extern
fortran
typeof_unqual
C language
#include directive
Binary resource inclusion
Constant expressions
Memory model
Thread storage duration
alignas (since C23)
const type qualifier
do-while loop
reproducible (since C23)
switch statement
volatile type qualifier
Concurrency support
Concurrency support library
atomic_flag_test_and_set
atomic_is_lock_free
tss_create
Date and time
timespec_get
Dynamic memory management
Dynamic memory management
Error handling
assert
set_constraint_handler_s
File input/output
fgets
putchar
swprintf_s
vwscanf
Localization support
Numerics
CMPLXF
FE_TONEAREST
FE_UNDERFLOW
HUGE_VALF
acoshl
ccos
erfl
fabsd64
fegetexceptflag
isgreaterequal
llabs
nearbyint
Program support
EXIT_FAILURE
Strings
iswspace
mbrtoc32
towlower
wcscpy
wcsrtombs_s
wcstombs
wmemset
Type support
Type support
Variadic functions
va_arg