Initialization of a Private Static Const Map in C ++

In this tutorial, we will be implementing a private static const map in C++. We will consider the example of car brands and their manufacturing country to show the implementation of this. The below implementation works fine in the GNU C++ 17 compiler and above.

Implementation

#include"bits/stdc++.h"

using namespace std;

#define int long long

// Applicable for compilers with GNU C++ 17 and above 

struct cars {
public:
  static const string& map(const string& st)
  {
    return mp.at(st);
  }
  
  static void printKeys() { // Function to access the keys and their corresponding value stored in the map
        for (const auto& pair : mp) {
            cout << pair.first <<":  "<<pair.second<<endl;
        }
    }
  
private:
  static const inline std::map<string, string> mp = { //storing keys and values in the static const map
    {"Tata", "India"},
    {"Mercedes", "Germany"},
    {"Honda", "Japan"},
    {"Ford", "United States"},
    {"Lamborghini", "Italy"},
    {"Leapmotor", "China"}
  };
  
};


signed main(){
  cout<<"The manufacturer country of the following car brands are: "<<endl<<endl;    
  cars::printKeys();
}

Output

The manufacturer country of the following car brands are:

Ford: United States
Honda: Japan
Lamborghini: Italy
Leapmotor: China
Mercedes: Germany
Tata: India

In this implementation, you can see that we were able to create a private static const map and also access and print the key and values stored in the map.