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                        html file -

<html>

<body>

<form action="slip_4_Q3.php" method=get>

<center>

<table>

<tr><td>Enter No1</td><td><input type="text" name="a"></td></tr>

<tr><td>Enter No2</td><td><input type="text" name="b"></td></tr>

<tr><td></td><td><input type="submit" value="SUBMIT"></td></tr>

</table>

</center>

</form>

</body>

</html>




php file -

<?php

      class Calculate

      {

        public $a;

        public $b;

     
        function __construct($a,$b)

        {

          $this->a=$a;

          $this->b=$b;

         }

         public function add()

         {

          $c=$this->a+$this->b;

          echo"Addition = $c
";

         }

         public function subtract()

         {

          $c=$this->a-$this->b;

          echo"Subtract = $c
";

         }

         public function multiply()

         {

          $c=$this->a*$this->b;

          echo"Multiplication = $c
";

         }

         public function div()

         {

          $c=$this->a/$this->b;

          echo"Division = $c";

         }

    }

$x=$_GET['a'];

$y=$_GET['b'];

$calc=new Calculate($x,$y);

$calc->add();

$calc->subtract();

$calc->multiply();

$calc->div();


?>

4) Write a Calculatorclass that can accept two values, then add them, subtract them, multiply them together, or divide them on request. For example: $calc = new Calculator( 3, 4 ); echo $calc- >add(); // Displays “7” echo $calc- >multiply(); // Displays “12”

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4) Write a Calculatorclass that can accept two values, then add them, subtract them, multiply them together, or divide them on request. For example:
$calc = new Calculator( 3, 4 );
echo $calc- >add(); // Displays “7”
echo $calc- >multiply(); // Displays “12”