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C++ Access Violation Reading Location 0xcccccccc

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Evidently the offsetof part is zero, and i and z are both zero the first time through your loop, so you get 0xcccccccc + 0 + 0 + 0 as the It just works without you having to do any memory management whatsoever. I need to get my … Make A Button That Opens Another Tk() That I Have Made (Python\tkinter) 1 reply I have made two windows startscreen=tk() and FirstScreen=tk() I want to With vector, at least if you get runtime errors, they will not be memory related as they are now. http://supportcanonprinter.com/access-violation/access-violation-reading-location-c.html

Why are copper cables round? Sign in using Search within: Articles Quick Answers Messages Use my saved content filters home articles Chapters and Sections> Search Latest Articles Latest Tips/Tricks Top Articles Beginner Articles Technical Blogs Posting/Update That should be a hint –antiduh Jul 12 '14 at 20:52 addr denotes 8 bit address and hence the data type char. –user3833065 Jul 13 '14 at 2:34 Any suggestion would be greatly appreciated :-) c++ directx access-violation share|improve this question edited Jul 6 '13 at 2:22 asked Jul 6 '13 at 2:00 Yann 105112 By "when

C++ Access Violation Reading Location 0xcccccccc

I don't know what it tries to do, so I cannot tell you what the code should be. So as far as i know, they should both end up in the same binary. Step 1 is always to understand the error.

In debug MS puts such magic values here and there to help you find bugs. Second, why are you writing C++ as if it's Fortran, where all your variables are capitalized? Do you need your password? 0xcccccccc Visual Studio mLastMousePos.x = 0; mLastMousePos.y = 0; ... } mMainWndCaption being declared like this in the .h std::wstring mMainWndCaption; and set with a default value in the constructor of the class ShadowsApp

What would be your next deduction in this game of Minesweeper? Access Violation Writing Location Visual Studio Archeological evidence of nuclear warfare Boyfriend is coowner with sister, wants to move out Should we eliminate local variables if we can? float planeCoefA = 0.0; float planeCoefB = 0.0; float planeCoefC = 0.0; float planeCoefD = 0.0; CALL: calculatePlaneEQ (<...>, planeCoefA, planeCoefB, planeCoefC, planeCoefD); DEF: void calculatePlaneEQ (<...>, float & myXnorm, float Application Lifecycle> Running a Business Sales / Marketing Collaboration / Beta Testing Work Issues Design and Architecture ASP.NET JavaScript C / C++ / MFC> ATL / WTL / STL Managed C++/CLI

I managed to solve this by changing loop header, deleting equal sign before 1000. Exception Thrown: Write Access Violation. What is the value of K? By using new[]/delete[] you've moved the focus away from the real goal of computing eigenvalues and into the realm of pointer manipulation, memory management, etc.. There are scores of matrix libraries for C++ that solve eigenvalues and whatever else you want to do with a matrix.

Access Violation Writing Location Visual Studio

I'm rusty on my pointers but it seems that this should work! Last edited on Apr 12, 2011 at 5:42am UTC Mar 31, 2011 at 11:34pm UTC Disch (13766) char pointers are not strings if you want to have a string... C++ Access Violation Reading Location 0xcccccccc If your types don't match up, and you don't know why, it's probably an error. Access Violation Writing Location C Solution 2 Accept Solution Reject Solution Hi,You access the array out of bounds, so it's kind of strange the introducing strictly less condition didn't change anything.

You may have to register or Login before you can post: click the register link above to proceed. check my blog You simply need to write to the memory location that the pointers refer to, so a single pointer is sufficient. In your code remove all calls to new[] and delete[], every single one of them, and replace them with std::vector. See this http://www.nobugs.org/developer/win3...eap.html#table I went through the debug process by placing breakpoints. 0xc0000005: Access Violation Writing Location

Suggestions anyone? As to using new[], I would suggest you change to std::vector<> instead of using new[]/delete[]. Second, why are you writing C++ as if it's Fortran, where all your variables are capitalized? http://supportcanonprinter.com/access-violation/access-violation-reading-location-0xc0000005.html Join them; it only takes a minute: Sign up 0xC0000005: Access violation writing location 0xcccccccc up vote -1 down vote favorite When I call my calculatePlaneEQ function, it throws me an

Is your question related to IO? 0xc0000005: Access Violation Reading Location 0x00000000 Your problems begin here: char* regPtr = (char*)addr; addr is a char, and in your program it has the value 0x28. And some system stuff is at well-known addresses.

The code is to find the eigen values of any given matrix of dimension NxN.

  1. Initialize pointer.
  2. That shouts out for using std::vector instead of hard-to-maintain new[] / delete[] calls.
  3. For your particular code, probably myMap hasn't been allocated yet, then myMap[0][0] would result in an access attempt to 0xcccccccc.
  4. Their value needs to be initialized to a valid memory address. –Ed S.
  5. You're trying to use unitialized pointer under msvc in debug build.
  6. trying to access an element that is outside the boundaries of the vector's range).
  7. should be mixed case/lower case.
  8. If anything, you will get access out-of-bounds errors (i.e.
  9. share|improve this answer edited Jul 12 '14 at 20:57 answered Jul 12 '14 at 20:49 David Heffernan 441k27608984 1 +1 particularly for the advice about casting.

With the way virtual memory works, unless he's requesting a ridiculously large block, that's not likely the real cause. I will give it a try and let you know and keep all the things you said in mind. if I dont type cast it. Access Violation Reading Location C++ Visual Studio To start viewing messages, select the forum that you want to visit from the selection below.

But what i mentioned above are just the guidelines. –Himanshu Tyagi Jul 12 '14 at 21:01 add a comment| Your Answer draft saved draft discarded Sign up or log in Last, are you trying to fake C++ into making arrays start at index 1 instead of 0? Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Search: Forum Beginners Unhandled exception at : Access violatio Unhandled have a peek at these guys Reply With Quote June 4th, 2012,09:18 AM #7 GCDEF View Profile View Forum Posts Elite Member Power Poster Join Date Nov 2003 Location Florida Posts 12,488 Re: 0xC0000005: Access violation writing

Maybe if you were creating your own memory pool or other sort of structure, but all you're doing is trying to create a dynamic array. C++ programmers have an unwritten rule -- capitalizaton is for macros, and variables, class/struct names, etc. Difference between if else and && || Changing thickness of outline in QGIS Detect ASCII-art windows made of M and S characters Interview for postdoc position via Skype What is the But if you're building a kernel, you probably also understand pointers really, really well. :) So you know when the rules may be broken. –cHao Jul 12 '14 at 20:59

Linux questions C# questions ASP.NET questions fabric questions C++ questions discussionsforums All Message Boards... Also i am sure that i am not out of memory because i tried to statically create a larger array just before that statement and i could create it. Debugging is twice as hard as writing the code in the first place. Albert Holguin 10-Apr-11 21:49pm well you pass the address to the array, which is technically the address of the first element of the array, but all you really have

How can the declaration of a random variable in a class can "fix" such a thing ?! share|improve this answer answered Oct 1 '12 at 21:00 Ed S. 87.9k13132199 To be a little more specific, you have allocated space for the pointers, but when you de-dereference