Slip 5 - A) Create an abstract class Shape with methods area( ) and volume( ). Derive three classes rectangle (length, breath), Circle(radius) and Cylinder(radius, height), Calculate area and volume of all. (Use Method overriding).

 Solution:

slip5-p2-q1.php

<?php
define('pi',3.14);
abstract class shape
{
 abstract function calc_area($r,$h);
 abstract function calc_vol($r,$h);
}
class circle extends shape
{
  function calc_area($r,$a)
  {
              return pi*$r*$a;       
  }

}

class cylinder extends shape
{
  function calc_area($r,$h)
  {
              return 2*pi*$r*($r+$h);          
  }

  function calc_vol($r,$h)
  {
              return pi*$r*$r*$h;
  }
}

class rectangle extends shape
{
  function calc_area($r,$h)
  {
              return $r*$h;   
  }

}
$r=$_GET['r'];
$h=$_GET['h'];
$a=$r;
$ob=new rectangle();
echo "Area of rectangle ".$ob->calc_area($r,$h);
echo "</br>";
$ob=new cylinder();
echo "Area of cylinder ".$ob->calc_area($r,$h);
echo "</br>";
echo "Volume of cylinder".$ob->calc_vol($r,$h);
echo "</br>";
$ob=new circle();
echo "Area of circle ".$ob->calc_area($r,$a);
echo "</br>";
?>

slip5-p1-q1.html

<html>
<body>
<form action="slip5-p2-q1.php" method=get>
<center><h2>Enter values for Cone & Cylinder</h2>
<p>Enter Radius </td><td><input type="text" name="r"><br>
<p>Enter Height</td><td> <input type="text" name="h"><br>
<p><input type="submit" value="calculate">
</form>
</body>
</html>

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5 Comments

  1. Prerna Puri.April 15, 2024 at 3:14 AM

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  2. Prerna Puri.April 15, 2024 at 3:14 AM

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  3. Prerna Puri.April 15, 2024 at 3:19 AM

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  4. Prerna Puri.April 15, 2024 at 11:36 AM

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  5. Prerna Puri.April 15, 2024 at 11:40 AM

    x = $x;
    $this->y = $y;
    }

    function area()
    {
    return $this->x * $this->y;
    }

    function volume()
    {
    return 0;
    }
    }

    class Cylinder extends Shape
    {
    function __construct($x, $y)
    {
    $this->x = $x;
    $this->y = $y;
    }

    function area()
    {
    return PI * $this->x * $this->x;
    }

    function volume()
    {
    return FOUR_THIRDS * PI * ($this->x * $this->x);
    }
    }

    class Circle extends Shape
    {
    private $radius;

    function __construct($radius)
    {
    $this->radius = $radius;
    }

    function area()
    {
    return PI * $this->radius * $this->radius;
    }

    function volume()
    {
    return 0; //
    }
    }

    ReplyDelete