PHP Program to Basic Arithmetic Trio with Explanation
PHP
Easy
PHP Operators
21 views
1 min read
87 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around one, line, basic. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Given a and b, print a+b, a-b, and a*b on one line.
Input Format
One line: a b.
Output Format
Three integers.
Constraints
-10^9
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;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
echo ($a+$b).' '.($a-$b).' '.($a*$b);
?>
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
Given a and b, print a+b, a-b, and a*b on one line.
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;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
echo ($a+$b).' '.($a-$b).' '.($a*$b);
?>
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