6.Function in c part - 3

assert(int)
(constants only)
int raise(int sig). This
void* signal(int sig, void (*func)(int))
atof(char*), atoi(char*), atol(char*)
strtod(char * str, char ** endptr ), strtol(char *str, char **endptr), strtoul(char *str, char **endptr)
rand(), srand()
malloc(size_t), calloc (size_t elements, size_t elementSize), realloc(void*, int)
free (void*)
exit(int), abort()
atexit(void (*func)())
getenv
system
qsort(void *, size_t number, size_t size, int (*sortfunc)(void*, void*))
abs, labs
div, ldiv

isalnum, isalpha, isblank
iscntrl, isdigit, isgraph
islower, isprint, ispunct
isspace, isupper, isxdigit
tolower, toupper
struct lconv* localeconv(void);
char* setlocale(int, const char*);
va_start (va_list, ap)
va_arg (ap, (type))
va_end (ap)
va_copy (va_list, va_list)
memcpy, memmove
memchr, memcmp, memset
strcat, strncat, strchr, strrchr
strcmp, strncmp, strccoll
strcpy, strncpy
strerror
strlen
strspn, strcspn
strpbrk
strstr
strtok
strxfrm

(errno)
sin, cos, tan
asin, acos, atan, atan2
sinh, cosh, tanh
ceil
exp
fabs
floor
fmod
frexp
ldexp
log, log10
modf
pow
sqrt
offsetof macro
asctime (struct tm* tmptr)
clock_t clock()
char* ctime(const time_t* timer)
double difftime(time_t timer2, time_t timer1)
struct tm* gmtime(const time_t* timer)
struct tm* gmtime_r(const time_t* timer, struct tm* result)
struct tm* localtime(const time_t* timer)
time_t mktime(struct tm* ptm)
time_t time(time_t* timer)
char * strptime(const char* buf, const char* format, struct tm* tptr)
time_t timegm(struct tm *brokentime)

(constants)
int setjmp(jmp_buf env)
void longjmp(jmp_buf env, int value)
fclose
fopen, freopen
remove
rename
rewind
tmpfile
clearerr
feof, ferror
fflush
fgetpos, fsetpos
fgetc, fputc
fgets, fputs
ftell, fseek
fread, fwrite
getc, putc
getchar, putchar, fputchar
gets, puts
printf, vprintf
fprintf, vfprintf
sprintf, snprintf, vsprintf, vsnprintf
perror
scanf, vscanf
fscanf, vfscanf
sscanf, vsscanf
setbuf, setvbuf
tmpnam
ungetc