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TUTORIALS

C++ Language: Learn this versatile and powerful programming language. Includes
detailed explanations of pointers, functions, classes and templates, among
others...


REFERENCE

Description of the most important classes, functions and objects of the Standard
Language Library, with descriptive fully-functional short programs as examples.
Browse the C++ Reference


ARTICLES

User-contributed articles, organized into different categories.
You can contribute your own articles!
Browse Articles


LATEST FORUM ACTIVITY:

by JamieAl
Convert MATLAB function to C++   [General C++ Programming]
 
I have a function from a textbook:
https://people.maths.ox.ac.uk/trefethen/spectral.html Basically it calculates
the Chebyshev differentiation matrix and I hav...
Mar 12, 2024 at 9:13am2024-03-12T19:13:48.000Z
[3 replies] Last: The matrix should have dimensions n+1[/tt] by [tt]n+1[/tt], so
it's n... (by mbozzi)

by SubZeroWins
C++ Questions (1,2,3)   [Beginners]
 
1) Why does "&myChar " act differently in 2 different contexts? [code] char*
pointer = &myChar[0]; //ALSO WORKS!!! [/code] Above, it actually return th...
Mar 11, 2024 at 5:38am2024-03-11T15:38:42.000Z
[41 replies] Last: I was afraid you would reiterate that. That is why I
mentioned that I ... (by SubZeroWins)

by JamieAl
Why is my fft function not working as expected?   [General C++ Programming]
 
Trying to take the fft of 2D array along one direction (x for example and not y)
so it's a 1D FFT of 2D array. I have done this successfully before using Eigen
...
Mar 10, 2024 at 2:48pm2024-03-11T00:48:17.000Z
[7 replies] Last: @mbozzi Thanks a lot! I think this answers my question and
gets me th... (by JamieAl)

by Zaap
vector push_back passing size from 0 to overflow   [General C++ Programming]
 
Hi, please see the following code and the associated prints. I also add the
Argument class below. Basically, it crashes the second time it goes in the loop
b...
Mar 8, 2024 at 6:18am2024-03-08T16:18:12.000Z
[2 replies] Last: What is the definition of _arguments? (by seeplus)

by BigNibs
Looking for tutor for OOP class   [Beginners]
 
Hi everyone, I dont know if this is the right channel to ask this but im
starting to fall behind pretty hard in my OOP class, I really need to catch up
on a cou...
Mar 7, 2024 at 12:03am2024-03-07T10:03:57.000Z
[2 replies] Last: For a different take on your lecture notes, have a look at:
https://ww... (by seeplus)

by spistol
Linking problem with qrcodegencpp [Linux]   [Beginners]
 
Installing a new library and future its compilation is always pain for me. I've
just installed simple lib:
https://www.nayuki.io/page/qr-code-generator-library...
Mar 6, 2024 at 10:56pm2024-03-07T08:56:28.000Z
[4 replies] Last: >> /usr/lib/x86_64-linux-gnu/libqrcodegencpp.so.1 > This one
looks lik... (by keskiverto)

by Jonathan100
Pointer to array in 2d array   [Beginners]
 
Hi folks. I have certain function (in .cpp source) that takes a pointer to an
array of 8 integer values. (The function is responsible for creating a Minor -
ter...
Mar 6, 2024 at 5:09pm2024-03-07T03:09:57.000Z
[6 replies] Last: Ah, yes, you ran into magic VLA stuff. Fix that by cranking up
your c... (by Duthomhas)

by Jonathan100
Git questions   [Beginners]
 
Hi. Can I ask here git questions?
Mar 6, 2024 at 4:38am2024-03-06T14:38:41.000Z
[2 replies] Last: That git-scm website has lots of git flavors for the 3 big
OSes. If y... (by George P)

by malibor
Where to get dictionaries for spellcheck during coding?   [Lounge]
 
I'm coding in VSCode and use the extension called cSpell which let's me set
custom dictionaries to spell check code, comments and any text in source files.
P...
Mar 5, 2024 at 8:27pm2024-03-06T06:27:53.000Z
[7 replies] Last: You’re welcome. [sub]:O)[/sub][/sup] (by Duthomhas)

by JUANDENT
why use decltype(auto) return type instead of auto?   [General C++ Programming]
 
Hi, I have this code namespace detail { template <class F, class Tuple,
std::size_t... I> decltype(auto) apply_impl(F&& f, Tuple&& t,
std::index_sequence<I....
Mar 4, 2024 at 3:57pm2024-03-05T01:57:43.000Z
[3 replies] Last: I swear modern C++ is a minefield[/quote] Too bad there's no
golden i... (by George P)



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