Question

What is a Map? How would I create and use one in C++?

Answer 1

If you mean std::map, it stores pairs of values. In each pair, the first value is called the key, and can be used to quickly look up the associated other value.

You can write:

std::map<std::string, int> ages;
ages["Fred"] = 52;
ages["Sue"] = 31;

std::cout << "Fred's age is " << ages["Fred"] << std::endl;