PHP Exercises: Compute the sum of the three given integers. However, if any of the values is in the range 10..20 inclusive then that value counts as 0, except 13 and 17

PHP Basic Algorithm: Exercise-56 with Solution

Write a PHP program to compute the sum of the three given integers. However, if any of the values is in the range 10..20 inclusive then that value counts as 0, except 13 and 17.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes three parameters and returns the sum of fixed numbers
function test($x, $y, $z)
{
    // Call the 'fix_num' function on each input parameter and return the sum of fixed numbers
    return fix_num($x) + fix_num($y) + fix_num($z);
}

// Define a function named 'fix_num' that takes a number as input and returns a fixed number based on conditions
function fix_num($n)
{
    // Check if $n is between 10 and 13 or between 17 and 21 (exclusive)
    // If true, return 0; otherwise, return the original number
    return (($n < 13 && $n > 9) || ($n > 17 && $n < 21)) ? 0 : $n;
}

// Test the 'test' function with different input values and display the results
echo (test(4, 5, 7))."\n";
echo (test(7, 4, 12))."\n";
echo (test(10, 13, 12))."\n";
echo (test(17, 12, 18))."\n";
?>

Explanation:

• Main Function:
• The test function takes three parameters: $x, $y, and $z.
• It calls the fix_num function on each parameter and returns the sum of the resulting values.
• Helper Function (fix_num):
• The fix_num function checks each parameter ($n) to determine if it should be set to 0 based on specific ranges:
• If $n is between 10 and 13 (exclusive) or between 17 and 21 (exclusive), it returns 0.
• Otherwise, it returns the original value of $n.

Output:

16
11
13
17

Flowchart:

PHP Code Editor:

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