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Jose Caban
2025-06-07 11:34:38 -04:00
commit 0eb2d7c07d
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extern/stdcxx/4.2.1/examples/manual/multimap.cpp vendored Normal file
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/**************************************************************************
*
* multimap.cpp - Example program for multimap class.
*
* $Id: multimap.cpp 550991 2007-06-26 23:58:07Z sebor $
*
***************************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*
* Copyright 1994-2006 Rogue Wave Software.
*
**************************************************************************/
#include <iostream> // for cout, ostream
#include <map> // for multimap
#include <string> // for string
#include <examples.h>
typedef std::multimap<int, std::string, std::less<int>,
std::allocator<std::pair<const int, std::string> > >
months_type;
// Print out a multimap.
inline std::ostream&
operator<< (std::ostream &out, const months_type &m)
{
for (months_type::const_iterator it = m.begin (); it != m.end (); ++it)
std::cout << (*it).second << " has " << (*it).first << " days\n";
return out;
}
int main ()
{
// Create a multimap of months and the number of days in the month.
months_type months;
typedef months_type::value_type value_type;
// Put the months in the multimap with the number of days
// as the not necessarily unique key.
months.insert (value_type (31, std::string ("January")));
months.insert (value_type (28, std::string ("Febuary")));
months.insert (value_type (31, std::string ("March")));
months.insert (value_type (30, std::string ("April")));
months.insert (value_type (31, std::string ("May")));
months.insert (value_type (30, std::string ("June")));
months.insert (value_type (31, std::string ("July")));
months.insert (value_type (31, std::string ("August")));
months.insert (value_type (30, std::string ("September")));
months.insert (value_type (31, std::string ("October")));
months.insert (value_type (30, std::string ("November")));
months.insert (value_type (31, std::string ("December")));
// Print out the months.
std::cout << "All months of the year\n" << months << std::endl;
// Find all months with 30 days.
std::pair<months_type::iterator, months_type::iterator> p =
months.equal_range (30);
// Print out the 30 day months.
std::cout << "\nMonths with 30 days\n";
for ( ; p.first != p.second; ++p.first)
std::cout << (*p.first).second << '\n';
return 0;
}