Computer Mathematics Program to Divisible By 4 From Last Two Digits with Explanation
Computer Mathematics
Medium
Integers & Divisibility
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1 min read
91 words
This problem helps you practice core Computer Mathematics fundamentals in a practical way. It builds intuition around divisible, digit, last. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Given a decimal string s, decide if it represents a number divisible by 4.
Input Format
One line: string s (digits).
Output Format
YES or NO.
Constraints
1
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
If length==1 use that digit. Else take last two digits as number x. If x%4==0 YES else NO.
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 decimal string s, decide if it represents a number divisible by 4.
Input / Output
Input
One line: string s (digits).
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).
Difficulty
Medium
Computer Mathematics
Official Solution
If length==1 use that digit. Else take last two digits as number x. If x%4==0 YES else NO.
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