Manage a Device with a unique_ptr

#include <iostream>
#include <memory>
using namespace std;

class Sensor {
public:
    int read() { return 42; }
};

int main() {
    // your code here: declare unique_ptr<Sensor> and call read() using ->
    unique_ptr<Sensor> ptr{new Sensor};
    printf("Sensor reading: %d\n", ptr->read());
   

    return 0;
}