map Iterate in C++

In C++, a hash table is implemented using the unordered_map container. To iterate over a hash table using the range-based for loop, you can loop through the pairs of keys and values stored in the hash table.

Here is an example of how you can iterate over a hash table in C++ using the unordered_map container:

``c++ #include #include using namespace std;


int main() {

    unordered_map myHashMap;

    myHashMap["apple"] = 10;

    myHashMap["banana" ] = 5;

    myHashMap["orange"] = 20;
// iterate through the hash table using the range-based for loop

    for (auto const& pair: myHashMap) {

        cout << "Key: " << pair.first << ", Value: " << pair.second << endl;

    }

    return 0;

}



Output:



Key: apple, Value: 10

Key: banana, Value: 5

Key: orange, Value: 20

In the above example, auto const& pair is used as a reference to the std::pair type representing each element of the hash map. pair.first and pair.second` represent the key and value pairs, respectively.

map Iterate in C++

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