pr22018.cpp

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// File Name: pr22018.cpp
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#include <iostream>
#include <map>

typedef std::multimap<int, char> MYMAP;

int main()
{
    // Create the multimap object.
    MYMAP charMultimap;

    // Populate the multimap with values.
    charMultimap.insert(MYMAP::value_type(1,'A'));
    charMultimap.insert(MYMAP::value_type(4,'C'));
    charMultimap.insert(MYMAP::value_type(2,'B'));
    charMultimap.insert(MYMAP::value_type(7,'E'));
    charMultimap.insert(MYMAP::value_type(5,'D'));
    charMultimap.insert(MYMAP::value_type(3,'B'));
    charMultimap.insert(MYMAP::value_type(6,'D'));

    // Display the contents of the multimap.
    std::cout << "Contents of multimap: " << std::endl;
    MYMAP::iterator iter;
    for (iter = charMultimap.begin();
            iter != charMultimap.end(); iter++)
    {
        std::cout << (*iter).first << " --> ";
        std::cout << (*iter).second << std::endl;
    }

    // Erase the multimap's second element.
    iter = charMultimap.begin();
    charMultimap.erase(++iter);

    // Display the new contents of the multimap.
    std::cout << "Contents of new multimap: " << std::endl;
    for (iter = charMultimap.begin();
            iter != charMultimap.end(); iter++)
    {
        std::cout << (*iter).first << " --> ";
        std::cout << (*iter).second << std::endl;
    }

    return 0;
}