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How to write 3d mapping in C  ?
map<string, int> Employees
Employees[“person1”] = 200;

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

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

map<pair<string, string>, int> Employees;
Employees[make_pair("person1", "age")] = 200;

#include<map>
#include<tuple>
#include<string>
using namespace std;
map<tuple<string,string>,int> m;
int main(){
    m[make_tuple("person1","age")]=33;
}