std::map get all keys

  1. First, include the necessary header file for the map container class, which is .

  2. Define a map variable of the desired key-value pair type, for example, std::map mapName.

  3. Use the std::map's member function begin() to obtain an iterator pointing to the first element in the map.

  4. Use the std::map's member function end() to obtain an iterator pointing to the position just beyond the last element in the map.

  5. Iterate through the map using a for loop or a while loop, starting from the iterator obtained in step 3 and ending at the iterator obtained in step 4.

  6. Access the keys using the iterator's ->first to retrieve the key associated with the current element.

  7. Store or process the keys as needed.

  8. Continue the iteration until reaching the end of the map.