stl c++ map code example

Example 1: map in cpp

#include <map>

// empty map container 
map<int, int> gquiz1; 
  
// insert elements in random order 
gquiz1.insert(pair<int, int>(1, 40));

Example 2: map of maps c++

map <typename,map<typename,typename>> mp;
map[key1][key2]=values