Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Post History

82%
+12 −1
Q&A Why is it considered bad practice to use float for representing currency?

This is intended to be a canonical post for this problem which is pretty common. Especially among beginners. I've heard that I should avoid using floating point variables for representing curren...

2 answers  ·  posted 2y ago by klutt‭  ·  last activity 2y ago by klutt‭

#3: Nominated for promotion by user avatar Alexei‭ · 2022-02-13T11:44:40Z (about 2 years ago)
#2: Post edited by user avatar klutt‭ · 2021-09-13T09:46:56Z (over 2 years ago)
#1: Initial revision by user avatar klutt‭ · 2021-09-13T09:38:55Z (over 2 years ago)
Why is it considered bad practice to use float for representing currency?
*This is intended to be a canonical post for this problem which is pretty common. Especially among beginners.*

---

I've heard that I should avoid using floating point variables for representing currency. What is the reason for that? Representing 123 dollars and 67 cents as 123.67 seems quite natural.