Standard Library Functions - C Interview Questions I

frexp	-	math.h
fscanf	-	stdio.h
fseek	-	stdio.h
fsetpos	-	stdio.h
ftell	-	stdio.h
fwrite	-	stdio.h
getc	-	stdio.h
getchar	-	stdio.h
getenv	-	stdlib.h
gets	-	stdio.h
gmtime	-	time.h
HUGE_VAL	-	math.h
_IOFBF	-	stdio.h
_IOLBF	-	stdio.h
_IONBF	-	stdio.h
isalnum	-	ctype.h
isalpha	-	ctype.h
iscntrl	-	ctype.h
isdigit	-	ctype.h
isgraph	-	ctype.h
islower	-	ctype.h
isprint	-	ctype.h
ispunct	-	ctype.h
isspace	-	ctype.h
isupper	-	ctype.h
isxdigit	-	ctype.h
jmp_buf	-	setjmp.h
labs	-	stdlib.h
LC_ALL	-	locale.h
LC_COLLATE	-	locale.h
LC_CTYPE	-	locale.h
LC_MONETARY	-	locale.h
LC_NUMERIC	-	locale.h
LC_TIME	-	locale.h
struct lconv	-	locale.h
ldexp	-	math.h
ldiv	-	stdlib.h
ldiv_t	-	stdlib.h
localeconv	-	locale.h
localtime	-	time.h
log	-	math.h
log10	-	math.h
longjmp	-	setjmp.h
L_tmpnam	-	stdio.h
malloc	-	stdlib.h
mblen	-	stdlib.h
mbstowcs	-	stdlib.h
mbtowc	-	stdlib.h
MB_CUR_MAX	-	stdlib.h
memchr	-	string.h
memcmp	-	string.h
memcpy	-	string.h
memmove	-	string.h
memset	-	string.h
mktime	-	time.h
modf	-	math.h
NDEBUG	-	assert.h
NULL	-	locale.h, stddef.h, stdio.h, stdlib.h, string.h, time.h
offsetof	-	stddef.h
perror	-	stdio.h
pow	-	math.h
printf	-	stdio.h
ptrdiff_t	-	stddef.h
putc	-	stdio.h
putchar	-	stdio.h
puts	-	stdio.h
qsort	-	stdlib.h
raise	-	signal.h
rand	-	stdlib.h
RAND_MAX	-	stdlib.h
realloc	-	stdlib.h
remove	-	stdio.h
rename	-	stdio.h
rewind	-	stdio.h
scanf	-	stdio.h
SEEK_CUR	-	stdio.h
SEEK_END	-	stdio.h
SEEK_SET	-	stdio.h
setbuf	-	stdio.h
setlocale	-	locale.h
setvbuf	-	stdio.h
SIGABRT	-	signal.h
SIGFPE	-	signal.h
SIGILL	-	signal.h
SIGINT	-	signal.h
signal	-	signal.h
SIGSEGV	-	signal.h
SIGTERM	-	signal.h
sig_atomic_t	-	signal.h
SIG_DFL	-	signal.h
SIG_ERR	-	signal.h
SIG_IGN	-	signal.h
sin	-	math.h
sinh	-	math.h
size_t	-	stddef.h, stdlib.h, string.h, sprintf, stdio.h
sqrt	-	math.h
srand	-	stdlib.h
sscanf	-	stdio.h
stderr	-	stdio.h
stdin	-	stdio.h
stdout	-	stdio.h
strcat	-	string.h
strchr	-	string.h
strcmp	-	string.h
strcoll	-	string.h
strcpy	-	string.h
strcspn	-	string.h
strerror	-	string.h
strftime	-	time.h
strlen	-	string.h
strncat	-	string.h
strncmp	-	string.h
strncpy	-	string.h
strpbrk	-	string.h
strrchr	-	string.h
strspn	-	string.h
strstr	-	string.h
strtod	-	stdlib.h
strtok	-	string.h
strtol	-	stdlib.h
strtoul	-	stdlib.h
strxfrm	-	string.h
system	-	stdlib.h
tan	-	math.h
tanh	-	math.h
time	-	time.h
time_t	-	time.h
struct tm	-	time.h
tmpfile	-	stdio.h
tmpnam	-	stdio.h
TMP_MAX	-	stdio.h
tolower	-	ctype.h
toupper	-	ctype.h
ungetc	-	stdio.h
va_arg	-	stdarg.h
va_end	-	stdarg.h
va_list	-	stdarg.h
va_start	-	stdarg.h
vfprintf	-	stdio.h
vprintf	-	stdio.h
vsprintf	-	stdio.h
wchar_t	-	stddef.h, stdlib.h
wcstombs	-	stdlib.h
wctomb	-	stdlib.h