atof | Convert a string into a double |
atoi | Convert a string into an integer |
atol | Convert a string into a long integer |
strtod | Convert a string into a double |
strtol | Convert a string into a long integer |
strtoul | Conver a string to an unsigned long integer |
rand | Random number generator |
srand | Set the random number generator sequence |
calloc | Allocate dynamic memory |
free | Free dynamic memory |
malloc | Allocate dynamic memory |
realloc | Resize dynamic memory |
abort | Cause abnormal program termination |
atexit | Register function to be called at normal program termination |
exit | Cause normal program termination |
getenv | Get an environment variable |
system | Execute an external command |
bsearch | Binary search |
qsort | Quick sort |
abs | Return absolute value of an integer |
div | Computes the quotient and remainder of integer division |
labs | Return absolute value of a long integer |
ldiv | Computes the quotient and remainder of long integer division |
mblen | Determines the number of bytes in a character |
mbtowc | Convert a multibyte character to a wide character |
wctomb | Convert a wide character to a multibyte character |
mbstowcs | Convert a multibyte string to a wide character string |
wcstombs | Convert a wide character string to a multibyte character string |