?? chapter9-32.cpp
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//文件名:CHAPTER9-32.cpp
#include <set>
#include <iostream>
#if _MSC_VER > 1020 // if VC++ version is > 4.2
using namespace std; // std c++ libs implemented in std
#endif
void main( )
{
multiset <int> ms1;
multiset <int> :: const_iterator ms1_AcIter, ms1_RcIter;
ms1.insert( 10 );
ms1.insert( 20 ); ms1.insert( 20 );
ms1.insert( 30 );
ms1_RcIter = ms1.upper_bound( 20 );
cout << "The first element of multiset ms1 with a key greater "
<< "than 20 is: " << *ms1_RcIter << "." << endl;
ms1_RcIter = ms1.upper_bound( 30 );
// If no match is found for the key, end( ) is returned
if ( ms1_RcIter == ms1.end( ) )
cout << "The multiset ms1 doesn't have an element "<< "with a key greater than 30." << endl;
else
cout << "The element of multiset ms1 with a key > 40 is: "<< *ms1_RcIter << "." << endl;
// The element at a specific location in the multiset can be
// found using a dereferenced iterator addressing the location
ms1_AcIter = ms1.begin( );
ms1_RcIter = ms1.upper_bound( *ms1_AcIter );
cout << "The first element of ms1 with a key greater than"
<< endl << "that of the initial element of ms1 is: "<< *ms1_RcIter << "." << endl;
}
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