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

- 141.2K All Categories
- 103.9K 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
- 553 Python
- 37 Ruby
- 4.4K VB.NET
- 1.6K VBA
- 20.9K Visual Basic
- 2.6K Game programming
- 317 Console programming
- 93 DirectX Game dev
- 1 Minecraft
- 112 Newbie Game Programmers
- 2 Oculus Rift
- 9K Applications
- 1.8K Computer Graphics
- 748 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
- 199 For sale
- 190 FreeLance Software City
- 1.9K Jobs Available
- 605 Jobs Wanted
- 213 Wanted
- 2.9K Microsoft .NET
- 1.8K ASP.NET
- 1.1K .NET General
- 3.4K Miscellaneous
- 7 Join the Team
- 356 Comments on this site
- 71 Computer Emulators
- 2.1K General programming
- 188 New programming languages
- 641 Off topic board
- 226 Mobile & Wireless
- 98 Android
- 126 Palm Pilot
- 340 Multimedia
- 156 Demo programming
- 184 MP3 programming
- Bash scripts
- 28 Cloud Computing
- 53 FreeBSD
- 1.7K LINUX programming
- 371 MS-DOS
- Shell scripting
- 321 Windows CE & Pocket PC
- 4.1K Windows programming
- 944 Software Development
- 417 Algorithms
- 68 Object Orientation
- 92 Project Management
- 95 Quality & Testing
- 271 Security
- 7.7K WEB-Development
- 1.8K Active Server Pages
- 62 AJAX
- 6 Bootstrap Themes
- 55 CGI Development
- 28 ColdFusion
- 224 Flash development
- 1.4K HTML & WEB-Design
- 1.4K Internet Development
- 2.2K JavaScript
- 37 JQuery
- 310 WEB Servers
- 157 WEB-Services / SOAP

sundog
Member Posts: **3**

Can someone help me to write a program to calculate the value of x for which f(x) = 0 zero for the general quadratic equation. Use the quadratic formula.

a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

b.And out put the solutions for x.

c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

plz i'm really in need of help

a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

b.And out put the solutions for x.

c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

plz i'm really in need of help

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

6,349:

: a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

:

: b.And out put the solutions for x.

:

: c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

:

:

: plz i'm really in need of help

:

:

Place a couple of TLabels, TEdits and one TButton on the form. In the TButton.OnClick event code the following:

Use the StrToFloat() to convert the TEdit.Text property to doubles. This will give you the a, b, c coefficients as numbers, so you can calculate with them.

Then comes the maths part, just like you would do on paper. You might need an if-then-else-if-then-else statement to check the various answer possibilities:

[code]

if D < 0 then

begin

// Do something

end else if D = 0 then

begin

// Do something else

end else { no need for another if-then, because if the program gets

this far, D is not smaller or equal to 0, thus greater than 0 }

begin

// Third do something

end;

[/code]

Finally use FloatToStr() to convert the results back to strings to show them using another few TLabels.

Check out the help files for more info on these objects, functions.