//文件名:CHAPTER9-18.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
int main( )
{  multiset <int>::iterator ms1_pIter, ms2_pIter;
   multiset <int, less<int> > ms1, ms2;
   ms1.insert( 10 );
   ms1.insert( 20 );
   ms1.insert( 30 );
   ms1.insert( 40 );
   cout << "The original ms1 =";
   for ( ms1_pIter = ms1.begin( ); ms1_pIter != ms1.end( ); ms1_pIter++ )cout << " " << *ms1_pIter;
   cout << "." << endl;
   ms1.insert( 20 );
   ms1.insert( --ms1.end( ), 50 );
   cout << "After the insertions, ms1 =";
   for ( ms1_pIter = ms1.begin( ); ms1_pIter != ms1.end( ); ms1_pIter++ )cout << " " << *ms1_pIter;
   cout << "." << endl;
   ms2.insert( 100 );
   cout << "ms2 =";
   for ( ms2_pIter = ms2.begin( ); ms2_pIter != ms2.end( ); ms2_pIter++ )cout << " " << *ms2_pIter;
   cout << "." << endl;
}