PHP Exercises: Check a given integer and return true if it is within 10 of 100 or 200

PHP Basic Algorithm: Exercise-4 with Solution

Write a PHP program to check a given integer and return true if it is within 10 of 100 or 200.

Sample Solution:

PHP Code :

<?php
// Define a function named "test" that takes a parameter $x
function test($x) 
{
    // Use the absolute value function (abs) to check if the absolute difference between $x and 100 is less than or equal to 10
    // OR if the absolute difference between $x and 200 is less than or equal to 10
    if (abs($x - 100) <= 10 || abs($x - 200) <= 10)
        // If true, return true
        return true;

    // If false, return false
    return false;
}

// Use var_dump to print the result of calling test with argument 103
var_dump(test(103));

// Use var_dump to print the result of calling test with argument 90
var_dump(test(90));

// Use var_dump to print the result of calling test with argument 89
var_dump(test(89));
?>

Sample Output:

bool(true)
bool(true)
bool(false)

Flowchart:

PHP Code Editor:

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