I need help creating a program in C++ that behaves like a dictionary in python.

Example: id = {'miguel':4333, 'tom':3243, 'stacy':65443, 'robert':94340)}

Here are some messages and their outcomes:

id.keys()

['miguel','tom','stacy','robert'}

id.values()

[4333,3243,65443,94340]

id.items()

[('miguel',4333),('tom',3243),('stacy',65443),('robert',94349)]

also:

id.add('mark',1447) adds a pair to the dictionary

id.del('tom') removes the pair ('tom',3243)

id.in('mark') outputs true if mark is a key in grades at this moment

grades.get('tom') should return 3243

So the idea is now to define a class in C++ that behaves like a Python dictionary,

and which does the seven functions mentioned above.

The implementation should use a 'vector' to store the pairs. A pair could be

a vector, or a struct, or a class.

You can follow the pattern that a key is a string, and a value is an int.

No two pairs in a dictionary are allowed to have the same key.

You should overload the operator + to do the 'union' of two dictionaries.

If the dictionaries each contain the same key output an error message

if there is any kind of similar class in some version of C++, you should

ignore it.