Compartir a través de


multiset::value_type

A type that describes an object stored as an element as a multiset in its capacity as a value.

typedef Key value_type;

Remarks

value_type is a synonym for the template parameter Key.

Note that both key_type and value_type are synonyms for the template parameter Key. Both types are provided for the classes set and multiset, where they are identical, for compatibility with the classes map and multimap, where they are distinct.

For more information on Key, see the Remarks section of the topic.

Example

// multiset_value_type.cpp
// compile with: /EHsc
#include <set>
#include <iostream>

int main( )
{
   using namespace std;
   multiset <int> ms1;
   multiset <int>::iterator ms1_Iter;

   multiset <int> :: value_type svt_Int;   // Declare value_type
   svt_Int = 10;             // Initialize value_type

   multiset <int> :: key_type skt_Int;   // Declare key_type
   skt_Int = 20;             // Initialize key_type

   ms1.insert( svt_Int );         // Insert value into s1
   ms1.insert( skt_Int );         // Insert key into s1

   // A multiset accepts key_types or value_types as elements
   cout << "The multiset has elements:";
   for ( ms1_Iter = ms1.begin( ) ; ms1_Iter != ms1.end( ); ms1_Iter++ )
      cout << " " << *ms1_Iter;
   cout << "." << endl;
}
The multiset has elements: 10 20.

Requirements

Header: <set>

Namespace: std

See Also

Reference

multiset Class

Standard Template Library