example2_equal_range.cpp

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#include <iostream>
#include <unordered_map>
#include <string>

int main() {
    std::unordered_multimap<std::string, int> umm;
    umm.insert({"x", 1});
    umm.insert({"y", 2});
    umm.insert({"x", 3});
    umm.insert({"x", 4});

    auto range = umm.equal_range("x");
    std::cout << "Values for key 'x':" << std::endl;
    for (auto it = range.first; it != range.second; ++it) {
        std::cout << it->second << std::endl;
    }

    return 0;
}