Solved

Floats

Posted on 1998-08-27
5
315 Views
Last Modified: 2012-05-04
Hi,

I'm using Visual J++,
and I can't seem to get floats working right!
Here's a piece of code:
float f = 150 / 255;
g.drawString(new Float(f).toString,10,10);

It says 0.0
I'm no mathematician but I'm pretty sure that 150/255 isn't 0.

What's wrong?

Thanks
0
Comment
Question by:BabyFace
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
5 Comments
 
LVL 3

Accepted Solution

by:
sailwind earned 30 total points
ID: 1222768
150 and 255 are both integers.
When you divide two integers, you'll get an integer.
0.588 casted into an integer is a 0. That's why you're
getting 0 for output.

You should do:

float f = 150.0/255.0;   // now you're dividing float by float

That'll correct the problem.

0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222769
Oh yeah, since 150.0 is considered a double in Java. You should do:

double d = 150.0/255.0  


0
 
LVL 1

Author Comment

by:BabyFace
ID: 1222770
Thanks for your answer.
Which of the two take up more mem?
I suppose it's double eh?

Thanks again.
0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222771
int 32 bits
double 64 bits
0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222772
float 32 bits
long 64 bits
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
Suggested Courses

628 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question