isalpha
Tests whether an element in a locale is an alphabetic character.
template<Class CharType>
bool isalpha(
CharType _Ch,
const locale& _Loc
)
Parameters
_Ch
The element to be tested._Loc
The locale containing the alphabetic element to be tested.
Return Value
true if the element tested is alphabetic; false if it is not.
Remarks
The template function returns use_facet<ctype<CharType> >(_Loc).is(ctype<CharType>::alpha, _Ch).
Example
// locale_isalpha.cpp
// compile with: /EHsc
#include <locale>
#include <iostream>
using namespace std;
int main( )
{
locale loc ( "German_Germany" );
bool result1 = isalpha ( 'L', loc);
bool result2 = isalpha ( '@', loc);
bool result3 = isalpha ( '3', loc);
if ( result1 )
cout << "The character 'L' in the locale is "
<< "alphabetic." << endl;
else
cout << "The character 'L' in the locale is "
<< " not alphabetic." << endl;
if ( result2 )
cout << "The character '@' in the locale is "
<< "alphabetic." << endl;
else
cout << "The character '@' in the locale is "
<< " not alphabetic." << endl;
if ( result3 )
cout << "The character '3' in the locale is "
<< "alphabetic." << endl;
else
cout << "The character '3' in the locale is "
<< " not alphabetic." << endl;
}
Output
The character 'L' in the locale is alphabetic.
The character '@' in the locale is not alphabetic.
The character '3' in the locale is not alphabetic.
Requirements
Header: <locale>
Namespace: std