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std::isupper - cppreference.com

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<metanoindex/>

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Elemento definito nell'header

<cctype>

int isupper( int ch );

Controlla se il carattere è dato un carattere maiuscolo in base alla localizzazione corrente C. Nel predefinita locale "C", isupper restituisce true solo per le lettere maiuscole (ABCDEFGHIJKLMNOPQRSTUVWXYZ).

Original:

Checks if the given character is an uppercase character according to the current C locale. In the default "C" locale, isupper returns true only for the uppercase letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ).

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Se isupper restituisce true, è garantito che iscntrl, isdigit, ispunct e isspace false ritorno per lo stesso carattere nella stessa zona C.

Original:

If isupper returns true, it is guaranteed that iscntrl, isdigit, ispunct, and isspace return false for the same character in the same C locale.

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Parametri

ch -

carattere

Original:

character

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Valore di ritorno

Valore diverso da zero (true) se il carattere è una lettera maiuscola, 0 (false) altrimenti.

Original:

Non-zero value (true) if the character is an uppercase letter, 0 (false) otherwise.

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Esempio

#include <iostream>
#include <cctype>
#include <clocale>
 
int main()
{
    char c = '\xc6'; // letter Æ in ISO-8859-1
 
    std::cout << "isupper(\'\\xc6\', default C locale) returned "
               << std::boolalpha << (bool)std::isupper(c) << '\n';
 
    std::setlocale(LC_ALL, "en_GB.iso88591");
    std::cout << "isupper(\'\\xc6\', ISO-8859-1 locale) returned "
              << std::boolalpha << (bool)std::isupper(c) << '\n';

}

Output: 

isupper('\xc6', default C locale) returned false
isupper('\xc6', ISO-8859-1 locale) returned true

Vedi anche

Verifica se un carattere è classificato come lettere maiuscole da un locale

Original:

checks if a character is classified as uppercase by a locale

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(funzione di modello) [modifica]

Verifica se un carattere esteso è un carattere maiuscolo

Original:

checks if a wide character is an uppercase character

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(funzione) [modifica]

C documentation for isupper

ASCII values
(hex) 		characters

iscntrl
iswcntrl

isprint
iswprint

isspace
iswspace

isblank
iswblank

isgraph
iswgraph

ispunct
iswpunct

isalnum
iswalnum

isalpha
iswalpha

isupper
iswupper

islower
iswlower

isdigit
iswdigit

isxdigit
iswxdigit

0 - 8 0x00-0x08 control codes (NUL, etc.) ≠0 0 0 0 0 0 0 0 0 0 0 0
9 0x09 tab (\t) ≠0 0 ≠0 ≠0 0 0 0 0 0 0 0 0
10 - 13 0x0A-0x0D whitespaces (\n,\v,\f,\r) ≠0 0 ≠0 0 0 0 0 0 0 0 0 0
14 - 31 0x0E-0x1F control codes ≠0 0 0 0 0 0 0 0 0 0 0 0
32 0x20 space 0 ≠0 ≠0 ≠0 0 0 0 0 0 0 0 0
33 - 47 0x21-0x2F !"#$%&'()*+,-./ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
48 - 57 0x30-0x39 0123456789 0 ≠0 0 0 ≠0 0 ≠0 0 0 0 ≠0 ≠0
58 - 64 0x3a-0x40 :;<=>?@ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
65 - 70 0x41-0x46 ABCDEF 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 ≠0
71 - 90 0x47-0x5A GHIJKLMNOPQRSTUVWXYZ 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 0
91 - 96 0x5B-0x60 [\]^_` 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
97 -102 0x61-0x66 abcdef 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 ≠0
103-122 0x67-0x7A ghijklmnopqrstuvwxyz 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 0
123-126 0x7B-0x7E {|}~ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
127 0x7F backspace character (DEL) ≠0 0 0 0 0 0 0 0 0 0 0 0