programming - C - function isupperWhat links here?

Description

The isupper() function tests for any character that is an uppercase letter or is one of an implementation-defined set of characters for which none of int iscntrl(int c), int isdigit(int c), int ispunct(int c), or int isspace(int c) is true. In the C locale, isupper() returns true only for the characters defined as uppercase letters.

The behavior of the isupper() function is affected by the current locale. To modify the behavior, change the LC_CTYPE category in setlocale(), that is, setlocale(LC_CTYPE, newlocale). In the C locale or in a locale where character type information is not defined, characters are classified according to the rules of the U.S. ASCII 7-bit coded character set.

Parameters



Return Values

The isupper() function returns non-zero for true and zero for false. If the parameter is not in the domain of the function, the return result is undefined.
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filename:programming - C - function isupper
filename:programming%20%2D%20C%20%2D%20function%20isupper
last edit:December 02 2012 17:26:08 (4667 days ago)
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