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std::iswalpha

From cppreference.com
< cpp‎ | string‎ | wide
 
C++
 
Text processing library
 
Null-terminated wide strings
 
Defined in header <cwctype>
int iswalpha( std::wint_t ch );

Checks if the given wide character is an alphabetic character, i.e. either an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ), a lowercase letter (abcdefghijklmnopqrstuvwxyz) or any alphabetic character specific to the current locale.

If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined.

Contents

[edit] Parameters

ch - wide character

[edit] Return value

Non-zero value if the wide character is an alphabetic character, ​0​ otherwise.

[edit] Notes

ISO 30112 specifies which Unicode characters are include in POSIX alpha category.

[edit] Example

Run this code
#include <clocale>
#include <cwctype>
#include <iostream>
 
int main()
{
    wchar_t c = L'\u0b83'; // Tamil sign Visarga ('ஃ')
 
    std::cout << std::hex <<