Sum Of Two Digits in PHP

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Q. Write a PHP program to find the sum of two digits

<?php
// Define a two-digit number
$number = 47;

// Check if it's a valid two-digit number
if ($number >= 10 && $number <= 99) {
    $firstDigit = (int)($number / 10);  // Get the tens digit
    $secondDigit = $number % 10;        // Get the ones digit
    $sum = $firstDigit + $secondDigit;

    echo "The sum of digits of $number is: $sum";
} else {
    echo "Please enter a valid two-digit number.";
}
?>
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Q. Write an algorithm to find the sum of two digits in PHP

1. Start
2. Define a two-digit integer number
3. Check if number is between 10 and 99
4. If not, display "Invalid input"
5. Extract the first digit: firstDigit = number / 10
6. Extract the second digit: secondDigit = number % 10
7. Compute sum = firstDigit + secondDigit
8. Print the result
9. End
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