Solved

Casting

Posted on 1998-09-23
5
358 Views
Last Modified: 2010-04-15
Hi,

I have an array of float data type of which I tried to change them to round numbers by casting them to unsigned char data type. But for data such as 3.99, the result of the casting is 3. What can I do so that all the data will be rounded to their nearest values?

Rgds,
MY
0
Comment
Question by:misumi
[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
5 Comments
 
LVL 10

Accepted Solution

by:
rbr earned 10 total points
ID: 1253006
use floor and ceil.

double x=3.99;
char c;

c=(char)ceil(x);

0
 
LVL 84

Expert Comment

by:ozo
ID: 1253007
It won't be the nearest value if you have

double x=3.01;
char c;

c=(char)ceil(x);
0
 

Author Comment

by:misumi
ID: 1253008


So, what should I do? Must I use both ceil and floor together?
0
 
LVL 84

Expert Comment

by:ozo
ID: 1253009
You might consider
c=(char)ceil(x-0.5);
0
 
LVL 2

Expert Comment

by:rayb
ID: 1253010
Or a variation on ozo's last response:
int n= (int)(your_array_of_floats[index] + 0.5);
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Summary: This tutorial covers some basics of pointer, pointer arithmetic and function pointer. What is a pointer: A pointer is a variable which holds an address. This address might be address of another variable/address of devices/address of fu…
This is a short and sweet, but (hopefully) to the point article. There seems to be some fundamental misunderstanding about the function prototype for the "main" function in C and C++, more specifically what type this function should return. I see so…
The goal of this video is to provide viewers with basic examples to understand and use structures in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use while-loops in the C programming language.
Suggested Courses

623 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