#include <iostream> #include <string> #include <unordered_map> using namespace std; int main() { unordered_map<string, int> people = { {"John", 32}, {"Adele", 45}, {"Bo", 29} }; if (people.count("Adele")) { cout << "Adele is in the map"; } else { cout << "Adele is not in the map"; } return 0; }