Practical - 2 IWD

 

Aim

To write a PHP script to implement a simple calculator that performs basic mathematical operations.

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Algorithm

1. Declare two numbers.

2. Select the required mathematical operation.

3. Perform the calculation using operators.

4. Display the result.

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Program Code (PHP Script)

<?php
// Declare variables
$a = 20;
$b = 10;

// Addition
$add = $a + $b;

// Subtraction
$sub = $a - $b;

// Multiplication
$mul = $a * $b;

// Division
$div = $a / $b;

// Display results
echo "Addition: " . $add . "<br>";
echo "Subtraction: " . $sub . "<br>";
echo "Multiplication: " . $mul . "<br>";
echo "Division: " . $div;
?>

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Output

Addition: 30
Subtraction: 10
Multiplication: 200
Division: 2

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Result

The PHP script successfully performed addition, subtraction, multiplication, and division using a simple calculator logic.

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Viva-Related Questions

1. Which operators are used for calculations in PHP?
   → +, -, *, /

2. What happens if division by zero occurs?
   → It generates a warning and returns infinity or error.

3. Can user input be taken in PHP?
   → Yes, using HTML forms and PHP $_POST or $_GET.