How to write 3d mapping in C++?

Question

Can you please tell me how I can write multidimensional map. For two dimensional map, I did the following:

map<string, int> Employees
Employees[“person1”] = 200;

I was trying to use something similar to following for 3d mapping.

map<string, string, int> Employees;
Employees[“person1”, “age”] = 200;

Can you please tell me the correct way to do this?

and Is there a way I can initialize all the map elements to be 0 ? Just like on a array we can say int array[10]={0};

Answer 1

You need to create map of maps like that.

map<string, map<string, int> > employees;
employees["person1"]["age"] = 200;