I'm using code::blocks w/ minGW.
I get an error message at the first for statement
for(int& n : arr)
Is this an issue with the compiler not being c++0x compliant?
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I'm using code::blocks w/ minGW.
I get an error message at the first for statement
for(int& n : arr)
Is this an issue with the compiler not being c++0x compliant?
No, it's a problem with you not making a proper for loop.Everything in this color is optional, everything in bold is not.Code:for( initialize_stuff ; truth_test_to_continue_or_not ; increment_stuff )
{
do_stuff();
}
Quzah.
Yes.Quote:
Originally Posted by tabl3six
Hence the mention of C++0x, or rather C++11. Refer to clause 6.5.4.Quote:
Originally Posted by quzah
I don't have the C++ standard. Did they suddenly decide you don't need to form proper loops? I knew there was a reason I didn't like C++. Looks like they just gave me another one.
Quzah.
I just referred to one of the latest draft versions; the final version has not been published yet (I think), and I don't have my copy of the final draft with me.Quote:
Originally Posted by quzah
It certainly is not "suddenly", and it is a proper loop since the language defines what a proper loop is. Basically, it is syntactic sugar for a typical for loop that iterates over some array or container via iterators.Quote:
Originally Posted by quzah
Refer to clause 6.5.4.
Where do I find this?
In the (yet to be published) 2011 edition of the C++ standard. You can find draft versions at the C++ standards committee website.Quote:
Originally Posted by tabl3six
MinGW does indeed support C++11. You need to explicitly enable support for it, however, via a command line. There should also be an option for the compiler in the C::B gui.
Bear in mind that the version of MinGW available in C::B may be a few steps behind the original MinGW port, which in turn may be a few steps behind the current GCC release.
At a command prompt, type
$ gcc --version
and check to see what is supposed to be supported at that version (check the main GCC site).
I'm sorry I'm very new to this. Do I bring up the command prompt in windows or is there a way to do it in c::b. I tried the gui setting -std=C++0x, that did not work.Quote:
Originally Posted by Salem
Thanks everyone for the help.
as salem said, you need to check the version of g++ that you have. 4.6 is the earliest version that supports range-based for, and on a side note, the nullptr keyword.
I've searched for the 4.6 compiler. Doesn't seem to exist. I went to the GCC website and saw a link for it there, but the information is so overwhelming, not sure what to do.
I would think the author of the book wouldn't put examples of code you couldn't easily run. This seems like pulling teeth to me.
Think I'm going to ignor the C++0x chapter.
I don't know if this will work, but have you tried:
Settings -> compiler and debugger -> global compiler settings
In the "compiler flags" tab, there is an option that says, "Have g++ follow the coming C++0x ISO c++ language standard"
Perhaps enabling this option will help?
I doubt that will help unless the OP upgrades the compiler to version 4.6 or higher. The newest compiler I found on the MinGW site was version 4.52.
Jim
yes, did that. I'm just not sure how to upgrade to 4.6. Maybe I shouldn't.Quote:
Originally Posted by Matticus
I have GCC 4.5.2
I don't think you have many options other than compiling from source now...with mingw.
Btw...if you are adventurous enough...how about installing a Linux distro (on most of which installing gcc-4.6 would be point and click business)?
If you are worried about partitioning try it in a virtual machine.
I cannot condone with that.Quote:
Originally Posted by tabl3six
Even if one feature doesn't work does not mean they all won't. You'll learn a lot by studying this, even if you can't try them all out.
They're going to be important in the future. Best to at least know of these coming features now.
Elysia:
I did read through the chapter. Thing is I need to run the examples and do the exercises to learn this stuff. I'm going to install Visual Studio 2010 when I get home and maybe some of the commands will work on that.
I really don't want to skip anything. This has just been frustrating. A lot of cool features to try out. I do feel like I'm missing something.
Visual studio 2010 has support for the following C++0x features:
auto
lambdas
rvalue references
decltype
nullptr
static_assert
For more info: Intellisense and Browsing with C++0x - Visual C++ Team Blog - Site Home - MSDN Blogs
Well, it's nice to hear you aren't going to ignore it.Quote:
Originally Posted by tabl3six