// Can be outside or inside the main function
struct {
string name;
int age;
} user_data;
// The part you use the struct
cout << "What is your name? ";
cin >> user_data.name;
cout << "How old are you? ";
cin >> user_data.age;;
cout << endl << "Hello " << user_data.name << ", You are " << user_data.age << " years old!";