PHP Program to Even or Odd with Explanation
PHP
Easy
PHP Operators
19 views
1 min read
76 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around even, odd, check. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Check if n is even or odd.
Input Format
One integer n.
Output Format
EVEN or ODD.
Constraints
|n|
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$n=intval($inputText);
echo ($n%2===0)?'EVEN':'ODD';
?>
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Check if n is even or odd.
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$n=intval($inputText);
echo ($n%2===0)?'EVEN':'ODD';
?>
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