#include <iostream>
#include <vector>
#include <string>

struct VarInfo
{
    static std::vector<std::string> m_datatypeName;
};

std::vector<std::string> VarInfo::m_datatypeName{"",
                                                 "STRING",
                                                 "TIME",
                                                 "MACADDRESS",
                                                 "IPADDRESS",
                                                 "STRINGSET",
                                                 "SET",
                                                 "UINT32",
                                                 "INT32",
                                                 "BOOL"};  
int main()
{
    std::cout << VarInfo::m_datatypeName[0]
              << ", "
              << VarInfo::m_datatypeName[9]
              << "\n";

    return 0;
}