std:: isgraph (std::locale)

Checks if the given character is classified as a graphic character (i.e. printable, excluding space) by the given locale's std::ctype facet.

Parameters

Return value

Returns true if the character is classified as graphic, false otherwise.

Possible implementation

template<class CharT>
bool isgraph(CharT ch, const std::locale& loc)
{
    return std::use_facet<std::ctype<CharT>>(loc).is(std::ctype_base::graph, ch);
}

Example

#include <iostream>
#include <locale>
 
int main()
{
    const wchar_t c = L'\u2a0c'; // quadruple integral
 
    std::locale loc1("C");
    std::cout << "isgraph('⨌', C locale) returned "
              << std::boolalpha << std::isgraph(c, loc1) << '\n';
 
    std::locale loc2("en_US.UTF-8");
    std::cout << "isgraph('⨌', Unicode locale) returned "
              << std::boolalpha << std::isgraph(c, loc2) << '\n';
}

isgraph('⨌', C locale) returned false
isgraph('⨌', Unicode locale) returned true

See also