PHP Class Exercises : Calculator class which will accept two values as arguments

PHP class: Exercise-6 with Solution

Write a PHP calculator class which will accept two values as arguments, then add them, subtract them, multiply them together, or divide them on request.

For example :
$mycalc = new MyCalculator( 12, 6);
echo $mycalc- > add(); // Displays 18
echo $mycalc- > multiply(); // Displays 72

Sample Solution:

PHP Code:

<?php
class MyCalculator {
private $_fval, $_sval;
public function __construct( $fval, $sval ) {
$this->_fval = $fval;
$this->_sval = $sval;
}
public function add() {
return $this->_fval + $this->_sval;
}
public function subtract() {
return $this->_fval - $this->_sval;
}
public function multiply() {
return $this->_fval * $this->_sval;
}
public function divide() {
return $this->_fval / $this->_sval;
}
}
$mycalc = new MyCalculator(12, 6); 
echo $mycalc-> add()."\n"; // Displays 18 
echo $mycalc-> multiply()."\n"; // Displays 72
echo $mycalc-> subtract()."\n"; // Displays 6
echo $mycalc-> divide()."\n"; // Displays 2
?>

Sample Output:

18
72
6
2

Flowchart :

PHP Code Editor:

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