isprint

測試一個項目中的地區設定是一個可列印的字元。

template<Class CharType>
   bool isprint(
      CharType _Ch, 
      const locale& _Loc
   )

參數

• _Ch
  要測試的項目。

• _Loc
  包含項目的地區設定要測試的。

傳回值

true ，如果測試的項目可列印區域， false ，否則會傳回。

備註

樣板函式傳回 use_facet<ctype<CharType> > (_Loc)。是(ctype<CharType>::print， _Ch)。

範例

// locale_isprint.cpp
// compile with: /EHsc
#include <locale>
#include <iostream>
using namespace std;

int main( )   
{
   locale loc ( "German_Germany" );

   bool result1 = isprint ( 'L', loc );
   if ( result1 )
      cout << "The character 'L' in the locale is "
           << "a printable character." << endl;
   else
      cout << "The character 'L' in the locale is "
           << " not a printable character." << endl;

   bool result2 = isprint( '\t', loc );
   if ( result2 )
      cout << "The character 'backslash-t' in the locale is "
           << "a printable character." << endl;
   else
      cout << "The character 'backslash-t' in the locale is "
           << " not a printable character." << endl;

   bool result3 = isprint( '\n', loc );
   if ( result3 )
      cout << "The character 'backslash-n' in the locale is "
           << "a printable character." << endl;
   else
      cout << "The character 'backslash-n' in the locale is "
           << " not a printable character." << endl;
}

Output

The character 'L' in the locale is a printable character.
The character 'backslash-t' in the locale is a printable character.
The character 'backslash-n' in the locale is  not a printable character.

需求

標題: <locale>

命名空間: std