multimap.cpp #1

#include <map>
#include <iostream>

int main(int argc, const char *argv[])
{
    std::multimap<int, int> mmap;
    mmap.insert({1,1});
    mmap.insert({1,2});
    mmap.insert({2,1});

    auto i = mmap.equal_range(1);
    while (i.first != i.second) {
        std::cout << i.first->first << std::endl;
        i.first++;
    }
    return 0;
}