Programming in C

468 Appendix B The Standard C Library

size_t The type of integer produced by the sizeof

operator

wchar_t The type of the integer required to hold a

wide character (see Appendix A, “C Language

Summary”)

<limits.h>

This header file contains various implementation-defined limits for character and integer

data types. Certain minimum values are guaranteed by the ANSI standard.These are

noted at the end of each description inside parentheses.

Define Meaning

CHAR_BIT Number of bits in a char(8)

CHAR_MAX Maximum value for object of type char(127 if sign extension is

done on chars, 255 otherwise)

CHAR_MIN Minimum value for object of type char(–127 if sign extension

is done on chars, 0 otherwise)

SCHAR_MAX Maximum value for object of type signed char (127)

SCHAR_MIN Minimum value for object of type signed char(–127)

UCHAR_MAX Maximum value for object of type unsigned char(255)

SHRT_MAX Maximum value for object of type short int(32767)

SHRT_MIN Minimum value for object of type short int(–32767)

USHRT_MAX Maximum value for object of type unsigned short int

(65535)

INT_MAX Maximum value for object of type int(32767)

INT_MIN Minimum value for object of type int(–32767)

UINT_MAX Maximum value for object of type unsigned int(65535)

LONG_MAX Maximum value for object of type long int(2147483647)

LONG_MIN Minimum value for object of type long int(–2147483647)

ULONG_MAX Maximum value for object of type unsigned long int

(4294967295)

LLONG_MAX Maximum value for object of type long long int

(9223372036854775807)

LLONG_MIN Minimum value for object of type long long int

(–9223372036854775807)

ULLONG_MAX Maximum value for object of type unsigned long long int

(18446744073709551615)

Define Meaning

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