multiset::reference
提供对元素的引用类型。项目集存储区。
typedef typename allocator_type::reference reference;
示例
// multiset_ref.cpp
// compile with: /EHsc
#include <set>
#include <iostream>
int main( )
{
using namespace std;
multiset <int> ms1;
ms1.insert( 10 );
ms1.insert( 20 );
// Declare and initialize a reference &Ref1 to the 1st element
const int &Ref1 = *ms1.begin( );
cout << "The first element in the multiset is "
<< Ref1 << "." << endl;
}
要求
标头: <set>
命名空间: std