It looks like you're new here. If you want to get involved, click one of these buttons!

- 141K All Categories
- 103.8K Programming Languages
- 6.5K Assembler Developer
- 1.9K Basic
- 40K C and C++
- 2.9K C#
- 7.9K Delphi and Kylix
- 4 Haskell
- 9.7K Java
- 4.1K Pascal
- 1.3K Perl
- 2K PHP
- 551 Python
- 37 Ruby
- 4.4K VB.NET
- 1.6K VBA
- 20.9K Visual Basic
- 2.6K Game programming
- 317 Console programming
- 92 DirectX Game dev
- 1 Minecraft
- 112 Newbie Game Programmers
- 2 Oculus Rift
- 9K Applications
- 1.8K Computer Graphics
- 744 Computer Hardware
- 3.5K Database & SQL
- 535 Electronics development
- 1.6K Matlab
- 628 Sound & Music
- 258 XML Development
- 3.3K Classifieds
- 199 Co-operative Projects
- 198 For sale
- 190 FreeLance Software City
- 1.9K Jobs Available
- 604 Jobs Wanted
- 210 Wanted
- 2.9K Microsoft .NET
- 1.8K ASP.NET
- 1.1K .NET General
- 3.4K Miscellaneous
- 7 Join the Team
- 355 Comments on this site
- 70 Computer Emulators
- 2.1K General programming
- 187 New programming languages
- 628 Off topic board
- 217 Mobile & Wireless
- 89 Android
- 126 Palm Pilot
- 340 Multimedia
- 156 Demo programming
- 184 MP3 programming
- Bash scripts
- 27 Cloud Computing
- 53 FreeBSD
- 1.7K LINUX programming
- 370 MS-DOS
- Shell scripting
- 321 Windows CE & Pocket PC
- 4.1K Windows programming
- 942 Software Development
- 417 Algorithms
- 68 Object Orientation
- 92 Project Management
- 95 Quality & Testing
- 269 Security
- 7.7K WEB-Development
- 1.8K Active Server Pages
- 62 AJAX
- 5 Bootstrap Themes
- 55 CGI Development
- 28 ColdFusion
- 224 Flash development
- 1.4K HTML & WEB-Design
- 1.4K Internet Development
- 2.2K JavaScript
- 37 JQuery
- 308 WEB Servers
- 151 WEB-Services / SOAP

talhanasir
Member Posts: **13**

in C and C++

what is meaning of double-precision in the following question?

[blue]

Write a function that returns the double-precision area of a circle, given the double precision radius passed to it. The formula to calculate the radius of a circle is .

area = 3.14159 * radius * radius.

what will be the value of radius.? [/blue]

and what will be the value of radius in above question?

Talha Nasir

[blue]

Write a function that returns the double-precision area of a circle, given the double precision radius passed to it. The formula to calculate the radius of a circle is .

area = 3.14159 * radius * radius.

what will be the value of radius.? [/blue]

and what will be the value of radius in above question?

Talha Nasir

Terms of use / Privacy statement / Publisher: Lars Hagelin

Programmers Heaven articles / Programmers Heaven files / Programmers Heaven uploaded content / Programmers Heaven C Sharp ebook / Operated by CommunityHeaven

© 1997-2017 Programmersheaven.com - All rights reserved.

## Comments

770✭✭✭: [blue]

: Write a function that returns the double-precision area of a circle, given the double precision radius passed to it. The formula to calculate the radius of a circle is .

:

: area = 3.14159 * radius * radius.

:

: what will be the value of radius.? [/blue]

:

: and what will be the value of radius in above question?

: Talha Nasir

:

:

[green]Use [italic]double[/italic] variables as opposed to [italic]float[/italic] for [italic]radius[/italic] and [italic]area[/italic]. How the heck do I know what the value of radius is going to be? I'm not clairvoyant/omniscient.[/green]

1,784: : [blue]

: : Write a function that returns the double-precision area of a circle, given the double precision radius passed to it. The formula to calculate the radius of a circle is .

: :

: : area = 3.14159 * radius * radius.

: :

: : what will be the value of radius.? [/blue]

: :

: : and what will be the value of radius in above question?

: : Talha Nasir

: :

: :

: How the heck do I know what the value of radius is going to be? I'm not clairvoyant/omniscient.[/green]

:

With some math it should be:

raduis = sqrt(area / 3.14159)

78{

return 3.14159 * radius * radius;

}[/CODE]

: what is meaning of double-precision in the following question?

: [blue]

: Write a function that returns the double-precision area of a circle, given the double precision radius passed to it. The formula to calculate the radius of a circle is .

:

: area = 3.14159 * radius * radius.

:

: what will be the value of radius.? [/blue]

:

: and what will be the value of radius in above question?

: Talha Nasir

:

:

64: {

: return 3.14159 * radius * radius;

: }[/CODE]

:

That's it! And to be exact, define and take

const double pi = 2.0 * acos(0.0); // 2*arccosine(0)

because pi is usually not defined in C libraries.

FDrache.