Chapters
printf
scanf
putchar
getchar
puts
gets
fgets
fputs
fprintf
fscanf
sprintf
sscanf
fopen
fclose
fread
fwrite
fseek
ftell
rewind
fflush
perror
feof
ferror
clearerr
fileno
setbuf
setvbuf
tmpfile
tmpnam
remove
rename
chmod
chdir
mkdir
rmdir
malloc
calloc
realloc
free
memcpy
memmove
memset
memcmp
memchr
strcpy
strncpy
strcat
strncat
strcmp
strncmp
strchr
strrchr
strstr
strtok
strpbrk
strspn
strcspn
strdup
strlen
strrev
atoi
atof
atol
atoll
strtol
strtoll
strtoul
strtoull
strtod
strtof
strtold
rand
srand
abs
labs
llabs
div
ldiv
lldiv
qsort
bsearch
exit
_Exit
abort
atexit
system
getenv
setenv
unsetenv
putenv
time
clock
times
difftime
mktime
localtime
gmtime
asctime
ctime
strftime
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