473,756 Members | 3,051 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

XOR operator

JJK
I'd tried to port an application from vb6 to vb.net 2003. While testing is
I'd got a error in the XOR operator. This is an example:
dim c as Byte
....
mask = 190
Fileget(1,c)
c = c XOR mask
Fileput(2,c)

Run 1:
FileGet (1,c)
c = 77
c = c xor mask
c = 137
FilePut(2,c)

Run 2:
mask = 190
FileGet(1,c)
c = 137 ' That is OK
c = c XOR mask
c = 143 ' That is NOT my intention. I would it be 77 again
FilePut(1,c)
In vb6 I'd got in the second run as result of c = c Xor mask, c = 77 again
What is the matter?
Nov 22 '05 #1
0 1364

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
8032
by: Paul Davis | last post by:
I'd like to overload 'comma' to define a concatenation operator for integer-like classes. I've got some first ideas, but I'd appreciate a sanity check. The concatenation operator needs to so something like this: 1) e = (a, b, c, d); // concatenate a,b,c,d into e 2) (a, b, c, d) = e; // get the bits of e into a,b,c, and d For example, in the second case, assume that a,b,c,d represent 2-bit integers, and e represents an 8-bit...
1
3878
by: joesoap | last post by:
Hi can anybody please tell me what is wrong with my ostream operator??? this is the output i get using the 3 attached files. this is the output after i run assignment2 -joesoap #include "BitString.h"
5
3805
by: Jason | last post by:
Hello. I am trying to learn how operator overloading works so I wrote a simple class to help me practice. I understand the basic opertoar overload like + - / *, but when I try to overload more complex operator, I get stuck. Here's a brief description what I want to do. I want to simulate a matrix (2D array) from a 1D array. so what I have so far is something like this: class Matrix
0
1836
by: Martin Magnusson | last post by:
I have defined a number of custom stream buffers with corresponding in and out streams for IO operations in my program, such as IO::output, IO::warning and IO::debug. Now, the debug stream should be disabled in a release build, and to do that efficiently, I suppose I need to overload the << operator. My current implementation of the stream in release mode is posted below. Everything works fine for POD type like bool and int, but the...
3
2954
by: Sensei | last post by:
Hi. I have a problem with a C++ code I can't resolve, or better, I can't see what the problem should be! Here's an excerpt of the incriminated code: === bspalgo.cpp // THAT'S THE BAD FUNCTION!!
6
4430
by: YUY0x7 | last post by:
Hi, I am having a bit of trouble with a specialization of operator<<. Here goes: class MyStream { }; template <typename T> MyStream& operator<<(MyStream& lhs, T const &)
3
18828
by: gugdias | last post by:
I'm coding a simple matrix class, which is resulting in the following error when compiling with g++ 3.4.2 (mingw-special): * declaration of `operator/' as non-function * expected `;' before '<' token <snip> --------------------------------------------------- template <class T> class matriz;
5
2293
by: raylopez99 | last post by:
I need an example of a managed overloaded assignment operator for a reference class, so I can equate two classes A1 and A2, say called ARefClass, in this manner: A1=A2;. For some strange reason my C++.NET 2.0 textbook does not have one. I tried to build one using the format as taught in my regular C++ book, but I keep getting compiler errors. Some errors claim (contrary to my book) that you cannot use a static function, that you must...
8
2487
by: valerij | last post by:
Yes, hi How to write "operator +" and "operator =" functions in a class with a defined constructor? The following code demonstrates that I don't really understand how to do it... I think it has something to do with the compiler calling the destructor twice. Could someone point out where I go wrong? P.S.: The error it gives is "Debug Assertion Failure ....." (at run time) P.P.S: Everything else works just fine (without the use of...
3
3280
by: y-man | last post by:
Hi, I am trying to get an overloaded operator to work inside the class it works on. The situation is something like this: main.cc: #include "object.hh" #include "somefile.hh" object obj, obj2 ;
0
9456
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9273
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10032
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9872
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
9841
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9711
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
8712
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
5303
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
3358
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.