SteamID class for C++.
C++ port of php-steamid
#include <iostream>
#include "SteamID.hpp"
int main() {
auto s1 = new SteamID("76561198975579577");
std::cout << "ACCOUNT_ID: " << s1->getAccountId() << "\n";
std::cout << "STEAM2: " << s1->getIdSteam2Rendered(false) << "\n";
std::cout << "STEAM3: " << s1->getIdSteam3Rendered() << "\n";
}