Write a program in Dart
that shows the usage of Classes. The program should have a class SmartDevices
with the following members:

String Brand

• String os

• String Type

• String Feature Furthermore, the class should
have an overridden method toString() that should return a String

Please note the
followings:

. You need to create a
short-form constructor for this class.

• Create two instances of this class in the
main method which when printed should display the following respectively:

i.
Samsung
Phone with Android operating system and makes calls.

ii.
Apple Tablet
with ios operating system and has big screen.

• Please note that Samsung in instance 1 is Brand, Phone is Type,
Android is OS and makes calls is Feature. Same applies to instance 2.