c++ unordered_map initialize new value

To initialize a new value in an unordered_map in C++, you can follow these steps:

1. Declare an unordered_map variable and specify the key and value types:
   cpp std::unordered_map<KeyType, ValueType> myMap; Here, KeyType is the type of the keys you want to use, and ValueType is the type of the corresponding values.

2. Use the [] operator to access the key in the map and assign a value to it:
   cpp myMap[key] = value; Replace key with the specific key you want to initialize, and value with the value you want to assign to that key.

3. Alternatively, you can use the insert function to add a new key-value pair to the map:
   cpp myMap.insert(std::make_pair(key, value)); Again, replace key with the specific key you want to initialize, and value with the value you want to assign to that key.

4. If the key already exists in the map, assigning a new value using the [] operator will overwrite the existing value. However, using insert will not modify the existing value.

That's it! Now you have successfully initialized a new value in an unordered_map in C++.