Solved

problems with function

Posted on 2000-03-02
7
222 Views
Last Modified: 2010-04-02
How to write a function invert(x,p,n) that returnsx with n bits that begin at position p inverted ( i.e. chaged 1into 0 and vice versa) livig the others unchanged
0
Comment
Question by:Lora
[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
  • 3
  • 2
  • 2
7 Comments
 
LVL 4

Expert Comment

by:captainkirk
ID: 2577031
How are you specifying x?? A binary number, a hex number??
0
 

Author Comment

by:Lora
ID: 2577059
x-binary number
0
 
LVL 3

Accepted Solution

by:
LucHoltkamp earned 5 total points
ID: 2577108
unsigned inverse(unsigned x, unsigned p, unsigned n)
{
   return x ^ (0x1 << n) - 0x1 << p;
}
0
Technology Partners: 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!

 

Author Comment

by:Lora
ID: 2577323
Could you please help me with this one :
Write a program to remove trailing blanks and tabs from each line from output and to delete entirely blank line.
Help me please!
0
 
LVL 4

Expert Comment

by:captainkirk
ID: 2577334
Just a note - compiler warns about << operator precedence - need to clarify solution....
0
 

Author Comment

by:Lora
ID: 2577413
Can You please help me with this problem?
How to write a program to print all input linesthat are longer than 80 character?
Plaes help me
0
 
LVL 3

Expert Comment

by:LucHoltkamp
ID: 2579205
Ask a new question Lora, this one is closed.

Captain Kirk, it's true, the compiler warns for presedence, but it is ok in this case. To clarify:

return x ^ (((0x1 << n) - 0x1) << p);

It's ok because - goes for << and << goes for ^

Luc
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

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

IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

724 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