Classes and Objects

void main(){
  
  Human jenny = Human(startingHeight: 15);
  
  jenny.talk('Mommy');
  
  print(jenny.height);
  
//   Human james = Human(20);
  
//   print(james.height);

}

class Human {
  
  double height;
  int age = 0;
  
  Human({double startingHeight}){
    height = startingHeight;
  }
  
  void talk(String whatToSay){
    print(whatToSay);
  }
}