valarray<bool> 類別

類別範本 valarray<Type> 的特製化版本，類型為的專案 bool。

語法

class valarray<bool>

範例

// valarray_bool.cpp
// compile with: /EHsc
#include <valarray>
#include <iostream>

int main( )
{
   using namespace std;
   int i;

   valarray<int> vaL ( 10 ), vaR ( 10 );
   valarray<bool> vaBool ( 10 );
   for ( i = 0 ; i < 10 ; i += 2 )
      vaL [ i ] =  -i;
   for ( i = 1 ; i < 10 ; i += 2 )
      vaL [ i ] =  i;
   for ( i = 0 ; i < 10 ; i++ )
      vaR [ i ] =  i;

   cout << "The initial Left valarray is: ( ";
   for ( i = 0 ; i < 10 ; i++ )
      cout << vaL [ i ] << " ";
   cout << ")." << endl;

   cout << "The initial Right valarray is: ( ";
   for ( i = 0 ; i < 10 ; i++ )
      cout << vaR [ i ] << " ";
   cout << ")." << endl;

   vaBool = ( vaL < vaR );
   cout << "The result of the less-than comparison "
   << "test is the\nvalarray<bool>: ( ";
   for ( i = 0 ; i < 10 ; i++ )
      cout << vaBool [ i ] << " ";
   cout << ")." << endl;
}
/* Output:
The initial Left valarray is: ( 0 1 -2 3 -4 5 -6 7 -8 9 ).
The initial Right valarray is: ( 0 1 2 3 4 5 6 7 8 9 ).
The result of the less-than comparison test is the
valarray<bool>: ( 0 0 1 0 1 0 1 0 1 0 ).
*/

需求

標頭：<valarray>

命名空間：std

另請參閱

valarray 類別
C++ 標準程式庫中的執行緒安全