Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Tests whether an element in a locale is an alphabetic or a numeric character.
template<Class CharType>
bool isalnum(
CharType _Ch,
const locale& _Loc
)
Parameters
_Ch
The alphanumeric element to be tested._Loc
The locale containing the alphanumeric element to be tested.
Return Value
true if the element tested is alphanumeric; false if it is not.
Example
// locale_isalnum.cpp
// compile with: /EHsc
#include <locale>
#include <iostream>
using namespace std;
int main( )
{
locale loc ( "German_Germany" );
bool result1 = isalnum ( 'L', loc);
bool result2 = isalnum ( '@', loc);
bool result3 = isalnum ( '3', loc);
if ( result1 )
cout << "The character 'L' in the locale is "
<< "alphanumeric." << endl;
else
cout << "The character 'L' in the locale is "
<< " not alphanumeric." << endl;
if ( result2 )
cout << "The character '@' in the locale is "
<< "alphanumeric." << endl;
else
cout << "The character '@' in the locale is "
<< " not alphanumeric." << endl;
if ( result3 )
cout << "The character '3' in the locale is "
<< "alphanumeric." << endl;
else
cout << "The character '3' in the locale is "
<< " not alphanumeric." << endl;
}
The character 'L' in the locale is alphanumeric. The character '@' in the locale is not alphanumeric. The character '3' in the locale is alphanumeric.
Requirements
Header: <locale>
Namespace: std