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Cannot Allocate An Array Of Constant Size 0 C++

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more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Constants like this are better practice in most situations. –Mehrdad Dec 16 '10 at 6:19 1 All the #defines are global, that's why they are bad. This documentation is archived and is not being maintained. At delivery time, client criticises the lack of some features that weren't written on my quote. http://haywirerobotics.com/cannot-allocate/cannot-allocate-an-array-of-constant-size-0-visual-studio.html

Well that actually helps a whole lot, thanks! –chris Jan 6 '13 at 20:58 @chris: I don't know of anything that directly states that you can write to the Originally Posted by Salem You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much. freopen("input.txt","rt",stdin); //4 4 //*... //.... //.*.. //.... //3 5 //**... //..... //.*... //0 0 freopen("output.txt","wt",stdout); /*Field #1: *100 2210 1*10 1110 Field #2: **100 33200 1*100*/ int n=-1; int m=-1; int You cannot use 0 for array size and you MUST use a constant expression (as in, NOT a variable) for array size. http://stackoverflow.com/questions/9881777/why-do-i-get-cannot-allocate-an-array-of-constant-size-0

Cannot Allocate An Array Of Constant Size 0 C++

How do I read or post to the newsgroups? what does it mean by "used to" in the context below? Second, you cannot allocate an array statically with a size of 0, but that's another issue (although std::array allows you doing that). Can we not gain access to the libraries or something? 05-26-2009 #9 Elysia View Profile View Forum Posts C++まいる!Cをこわせ! Join Date Oct 2007 Location Inside my computer Posts 24,550 ...In C?

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The program is compiled as C. Error C2057: Expected Constant Expression A better idea might be to use alloca, if the array size isn't going to be very large. Newsgroups are used to discuss a huge range of topics, make announcements, and trade files. Got questions?Get answers.

Tagging provides a way to see both the big trends and the smaller, more obscure ideas and applications. Sep 1, 2010 at 8:07pm UTC Disch (13766) Well the code you posted works, so the problem must be elsewhere. const qualified variables are not constants in C. GO OUT AND VOTE more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life /

Error C2057: Expected Constant Expression

But a fair point. –Brooks Moses Dec 16 '10 at 20:02 add a comment| up vote 2 down vote You could also use int main() { enum { LEN = 5 his comment is here Quick Navigation C Programming Top Site Areas Settings Private Messages Subscriptions Who's Online Search Forums Forums Home Forums General Programming Boards C++ Programming C Programming C# Programming Game Programming Networking/Device Communication Cannot Allocate An Array Of Constant Size 0 C++ This makes it easy to follow the thread of the conversation, and to see what’s already been said before you post your own reply or make a new posting. Error 1 Error C2466: Cannot Allocate An Array Of Constant Size 0 Retagging as C since the code seems to be so. –Mike Kwan Mar 27 '12 at 0:32 3 @MikeKwan: Guys, don't retag as C because he is using a C++

I'm almost surprised it doesn't segfault. –Brooks Moses Dec 16 '10 at 6:30 I just tried your code (for science :), but LEN never changed. this content I'm going to go jump off my roof now.The size of a statically allocated array must be constant i'm afraid. And that means pointers. You signed out in another tab or window. Std::vector

Do humans have an ethical obligation to prevent animal on animal violence? Can I cite email communication in my thesis/paper? Search: Advanced Forum Search Forums Programming Web Development Computers Tutorials Snippets Dev Blogs Jobs Lounge Login Join! weblink I'll just go with the pointer, didn't want to but meh.

share|improve this answer answered Dec 16 '10 at 6:19 Karthik 11612 Works for me in gcc, no matter what dialect of C I specify. Spam Control Most newsgroup spam is filtered out by the MATLAB Central Newsreader. Terms Privacy Security Status Help You can't perform that action at this time.

Indeed - and for anyone using Visual C++ (Which is what it looks like, based on the debugger output shown), its unnecessary, because [CTRL] + [F5] .. 'a.k.a.' Start without debugging

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  2. Originally Posted by Adak io.h certainly IS included in some modern compilers.
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  4. I'm trying to initialize an array to a random size between 1 and 20.
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  7. Originally Posted by Adak io.h certainly IS included in some modern compilers.
  8. Sep 1, 2010 at 8:33pm UTC R0mai (730) Are you sure you don't have those line outside a function?

You can also add a tag to your watch list by searching for the tag with the directive "tag:tag_name" where tag_name is the name of the tag you would like to reduz added a commit that closed this issue Jun 17, 2016 reduz fixes compilation error on visual studio, closes

To view your watch list, click on the "My Newsreader" link. Inequality caused by float inaccuracy more hot questions lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Thus, that's either a compiler bug or something bizarre coming off a #define somewhere. http://haywirerobotics.com/cannot-allocate/cannot-allocate-memory-linux.html Outside of your DOS world, your header file is meaningless. 05-10-2008 #3 steve1_rm View Profile View Forum Posts UK2 Join Date Sep 2003 Posts 112 Hello, That worked ok with the

I am using MSVC++2010. Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #8 MorphiusFaydal D.I.C Lover Reputation: 43 Posts: 1,376 Joined: 12-May 05 Re: cannot allocate an array of constant You signed in with another tab or window.