These all involve the use of the header , which declares a number of types and macros and several functions of general use. The types and macros are as follows:
size_t
Described at the start of this chapter.
div_t
This is the type of the structure returned by div.
ldiv_t
This is the type of the structure returned by ldiv.
NULL
Again, described at the start of this chapter.
EXIT_FAILURE
EXIT_SUCCESS
These may be used as arguments to exit.
MB_CUR_MAX
The maximum number of bytes in a multibyte character from the extended character set specified by the current locale.
RAND_MAX
This is the maximum value returned by the rand function.