Assignment 7

void main()
{
  print("QUESTION NO. 01");
  Student std1 = Student();
  print("Printing Student1 details with Constructor");
  std1.getInfo();
  
  print("Printing Student2 details with setInfo Function");
  Student std2 = Student();
  std2.setInfo("Adil", 30,"Gujrat");
  std2.getInfo();

  print("Printing Student3 details with Constructor");
  Student std3 = Student();
  std3.getInfo();
}
class Student{
  late String name;
  late int    age;
  late String address;
  Student()
  {
    name    = "unknown";
    age     = 0;
    address = "not available"; 
  }
 
  void setInfo ([name, age, address])
  {
    this.name    = name;
    this.age     = age;
    this.address = address;
  }
  void getInfo()
  {
    print("Student name is: $name");
    print("Student age is: $age");
    print("Student address is: $address");
  }
}


void main()
{
  print("QUESTION NO. 02");
  print("Printing area with constructor with no Parameters");
  Rectangle rect1 = Rectangle();
  print("Printing area with constructor with two Parameters");
  Rectangle rect2 = Rectangle.n(10,10);
  print("Printing area with constructor with one Parameters");
  Rectangle rect3 = Rectangle.m(11);
  print("Printing area with constructor with Function");
  Rectangle rect4 = Rectangle();
  rect4.area(20,20);
}

class Rectangle{
  late int length;
  late int breadth;
  
  Rectangle()
  {
    this.length  = 0;
    this.breadth = 0;
    print("The area is " + (this.length * this.breadth).toString());
  }
  Rectangle.n(int length, int breadth)
  {
    this.length  = length;
    this.breadth = breadth;
    print("The area is " + (this.length * this.breadth).toString());
  }
  Rectangle.m(int number)
  {
    this.length  = number;
    this.breadth = number;
    print("The area is " + (this.length * this.breadth).toString());
  }
  void area(int length, int breadth)
  {
    this.length  = length;
    this.breadth = breadth;
    print("The area is " + (this.length * this.breadth).toString());
  }
  
    
}

void main()
{
  print("QUESTION NO. 03");
  AddAmount obj1 = AddAmount();
  AddAmount obj2 = AddAmount.m(200);
  
}

class AddAmount{
  int amount = 500;
  
  AddAmount()
  {
    this.amount = 500;
    print("Printing amount with constructor having no parameter " + this.amount.toString());  
  }
  AddAmount.m(int amount)
  {
    this.amount += amount;
    print("Printing amount with constructor having one parameter " + this.amount.toString());
  }
}

void main()
{
  print("QUESTION NO. 04");
  print("Printing output without passing anything");
  Programming prg1 = Programming();
  print("Printing output when String is passed");
  Programming prg2 = Programming.m("Dart");
}

class Programming{
  late String prg;
  
  Programming()
  {
    print("I Love programming Languages");
  }
  Programming.m(String name)
  {
    this.prg = name;
    print("I love " + this.prg);
  }
}

void main ()
{
  print("QUESTION NO. 05");
//   print("The time is" + this.hours.toString() + "hrs:" + this.minutes.toString() + 
//           "min:" + this.seconds.toString() + "sec:");
  print("Printing time with constructor having no parameter");
  Time time1 =Time();
  time1.displayTime();
  print("Printing time with constructor having parameters");
  Time time2 =Time.m(12,45,30);
  time2.displayTime();
  print("Printing time with constructor having wrong parameters");
  Time time3 =Time.m(25,61,60);
  time3.displayTime();
  print("Printing time with function");
  Time time4 =Time();
  time4.setTime(24,50,68);
  time4.displayTime(); 
}
class Time{
  late int hours;
  late int minutes;
  late int seconds;
  
  Time()
  {
    this.hours   = 00;
    this.minutes = 00;
    this.seconds = 00;
  }
  Time.m(hrs, mins, sec)
  {
    if (hrs<=24)
    {
    this.hours = hrs;
    }else {
      this.hours = 00;
    }
     if (mins<=60)
    {
    this.minutes = mins;
    }else {
      this.minutes = 00;
    }
     if (sec<=60)
    {
    this.seconds = sec;
    }else {
      this.seconds = 00;
    }
  }
  void setTime(hrs, mins, sec)
  {
    if (hrs<=24)
    {
    this.hours = hrs;
    }else {
      this.hours = 00;
    }
     if (mins<=60)
    {
    this.minutes = mins;
    }else {
      this.minutes = 00;
    }
     if (sec<=60)
    {
    this.seconds = sec;
    }else {
      this.seconds = 00;
    }

  }
  void displayTime()
  {
    print("The time is $hours hrs: $minutes min: $seconds sec");
  }
}

void main()
{
  print("QUESTION NO. 06");
  print("Printing using no parameter constructor");
  Laptop laptop1 = Laptop();
  laptop1.bootWindow();
  print("Printing using parameterized constructor");
  Laptop laptop2 = Laptop.m("DELL" , "i5-7th Gen", 16, 1024);
  laptop2.bootWindow();
  
}
class Laptop{
  late String brandName;
  late String modelName;
  late int ram;
  late int hDD;
  Laptop()
  {
    brandName = "unknown";
    modelName = "not-available";
    ram = 0;
    hDD = 0;
  }
    Laptop.m(bN,mN,ram,hDD)
  {
    this.brandName = bN;
    this.modelName = mN;
    this.ram = ram;
    this.hDD = hDD;
  }
  void bootWindow()
  {
    print(this.brandName + " Laptop window is loading....");
    print("Laptop specs are: " + this.modelName + " " + this.ram.toString() + " " + 
          this.hDD.toString());
  }
    
}

class Furniture{
  late String furnitureName;
  late String brandName;
  late int price;
  late bool warranty;
  Furniture()
  {
    furnitureName = " ";
    brandName     = " ";
    price         = 0;
    warranty      = false;
  }
  Furniture.m(fN,bN,price,warr)
  {
    this.furnitureName = fN;
    this.brandName     = bN;
    this.price         = price;
    this.warranty      = warr;
  }
  void showFurnitureSpecs ()
  {
    print("Furniture specs are:" + this.furnitureName + this.brandName + 
          this.price.toString()+ this.warranty.toString());
  }
}
class SmartPhone{
  late String brandName;
  late String modelName;
  late int ram;
  late int storage;
  SmartPhone()
  {
    brandName = " ";
    modelName = " ";
    ram = 0;
    storage = 0;
  }
  SmartPhone.m(bN,mN,ram,str)
  {
    this.brandName = bN;
    this.modelName = mN;
    this.ram = ram;
    this.storage = str;
  }
   void showPhoneSpecs ()
  {
    print("SmartPhone specs are:" + this.brandName + this.modelName + 
          this.ram.toString()+ this.storage.toString());
  }
}
class Fruit{
  late String fruitName;
  late String fruitColor;
  late String fruiteTaste;
  late int    fruitePrice;
  Fruit()
  {
     fruitName   = " ";
     fruitColor  = " "; 
     fruiteTaste = " ";
     fruitePrice =  0 ;
  }
  Fruit.m(fN,fC,fT,fP)
  {
     this.fruitName   = fN;
     this.fruitColor  = fC; 
     this.fruiteTaste = fT;
     this.fruitePrice = fP;
  }
   void showFruitSpecs ()
  {
    print("Fruit specs are:" + this.fruitName + this.fruitColor + 
          this.fruiteTaste + this.fruitePrice.toString());
  }
}
class Fan{
  late String fanBrand;
  late String fanModel;
  late String fanType;
  late int    fanPrice;
  Fan()
  {
    fanBrand  = " ";
    fanModel  = " ";
    fanType   = " ";
    fanPrice  =  0 ;
  }
  Fan.m(fB,fM,fT,fP)
  {
    this.fanBrand  = fB;
    this.fanModel  = fM;
    this.fanType   = fT;
    this.fanPrice  = fP;
  }
   void showFanSpecs ()
  {
    print("Fan specs are:" + this.fanBrand + this.fanModel + 
          this.fanType + this.fanPrice.toString());
  }
}