c++ map lookup

To perform a map lookup in C++, follow these steps:

1. Declare a map variable with the desired key and value types.
2. Insert key-value pairs into the map using the insert() function or the subscript operator [].
3. Use the find() function to search for a specific key in the map.
4. Check if the key was found by comparing the iterator returned by find() to the end() iterator.
5. If the key was found, access the corresponding value using the iterator's second member.