package main;
import "fmt";

type test interface{
    a(a int) (a, b int);
    b() (a, b int, string);
};
 
type Vehicle interface{
    move();
};
 
func drive(vehicle Vehicle){
    vehicle.move();
}
 
type Car struct{ };
type Aircraft struct{};

func (c Car) move(){
    fmt.Println("Автомобиль едет");
}
func (a Aircraft) move(){
    fmt.Println("Самолет летит");
}
 
func main() {
     
    tesla := Car{};
    boing := Aircraft{};
    drive(tesla);
    drive(boing);

    var anything interface{}; // Пустой интерфейс
    
    b := interface{}; // short decl

    anything = 42;
    fmt.Printf("Тип: %T, Значение: %v\n", anything, anything); // int, 42
    
    anything = "hello";
    fmt.Printf("Тип: %T, Значение: %v\n", anything, anything); // string, hello
    
    anything = 3.14;
    fmt.Printf("Тип: %T, Значение: %v\n", anything, anything); // float64, 3.14
}