please wait
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by hbcpp
Smart pointer confusion (std::unique_ptr in function argument) (1,2)
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| this is my first time working smart pointer and I getting confused with this: void test(std::unique_ptr<int> s) { cout << *s;//(s == nullptr); } int main... |
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Jul 20, 2022 at 12:21pm
[29 replies] Last: "I saw the light, I saw the light No more darkness, no more night Now ... (by seeplus)
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by awsdert
how to get locale based digit groups separator (ansi c)
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| I've tried searching for this information on the web but keep getting directed to either c# or c++ solutions that rely on sprintf etc, but as noted at https://m... |
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Jul 20, 2022 at 10:25am
[8 replies] Last: I may have had an ABI issue, I did a rebuild during my attempts to fin... (by awsdert)
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by jphillips356
dynamic array allocation
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| Hello. Had an assignment using dynamic array allocation. Instructions: Write a program that prompts the user to input the length of a string as an integer, fo... |
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Jul 19, 2022 at 11:47am
[4 replies] Last: There is also a design decision about how to handle less consistent us... (by keskiverto)
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by Cj230
Desperate for Explanation on I/O Assignment
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| Hello Everyone! I have a programming assignment I have been working on all day. I'm pretty sure I've just been overthinking it so I am going to post on here to... |
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Jul 19, 2022 at 9:40am
[3 replies] Last: I have been working on all day So post your code so that we can see... (by seeplus)
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by t im
About the upper_bound Function
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| Edit: In Solution 2, if I use upper_bound function instead of the menber function of multiset, time limit exceeded will alse be reported. So, I think the differ... |
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Jul 19, 2022 at 4:36am
[3 replies] Last: Thanks for your answers that benefit me. (by t im)
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by jphillips356
assistance with class code
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| Hello, been having issues with this program that uses classes. Any help would be appreciated, but please make it as simple as possible. This chapter defines ... |
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Jul 18, 2022 at 6:48pm
[15 replies] Last: sorry for not responding at all, was in the hospital for 3 days. Here... (by seeplus)
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by t im
About the loop condition
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| In case of the following two for loop: // case 1 for (int i = 0; i < n; i++) something; // case 2 for (int i = 0; i <= n - 1; i++) something; ... |
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Jul 18, 2022 at 6:36am
[3 replies] Last: Thanks for your answers which solve my confusion. (by t im)
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by Worldtreeboy
does all stream object have buffer except cerr?
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| I just started learning about stream and I am not quite sure how it works. correct me if I am wrong. A buffer is a memory region in which data is stored t... |
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Jul 16, 2022 at 1:46pm
[13 replies] Last: To determine if the standard C++ streams are synchronized with the sta... (by JLBorges)
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by LukeProducts
Variadic Template not working expectetly
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| Dear Community, i cannot figure out how to solve this. I am coding a Container Class and run into a Problem with my constructor. I wanna take a variadic list o... |
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Jul 15, 2022 at 11:58am
[6 replies] Last: C++20: #include <concepts> template < typename VTYPE > struct Conta... (by JLBorges)
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by ruzip
Convert any value/type to string callable from C
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| I'm trying to build a C++ function that converts any type to string. ex. int 4 will be "4" float foo with value of 2.5 will be "2.5" .. .. So far I'm ... |
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Jul 15, 2022 at 9:55am
[5 replies] Last: Thanks guys for the added info. Yes the C part requires it to be C99. ... (by ruzip)
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by kamlmish1978
Remove unwanted character from String concat macro
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| Hi I have a macro to do concatenation as below #define dd Cloud #define ff _Storage #define CCM_BRAND_CONCAT2(a,b) a##b The output is "Cloud _Stor... |
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Jul 13, 2022 at 9:33am
[1 reply] : Pre-processor macros are very limited in what they can do. And, gener... (by kigar64551)
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by Geckoo
Rosetta Site
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| Hello. I really like to "rummage" for some interesting codes on the Rosetta site which seems to me really relevant. I learnt many, many things especially about ... |
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Jul 12, 2022 at 9:35pm
[8 replies] Last: I used to work for a US technology chain store company* that had a sto... (by deleted account xyzzy)
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by Guest434
Class as struct member
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| Suppose there is a struct with a class as a member of the struct, as in the example below. typedef struct _MYSTRUCT { int Num; Class MyClass; } MYSTR... |
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Jul 12, 2022 at 8:29am
[3 replies] Last: If you want to define its members out-of-line (say, in a .cpp file): ... (by JLBorges)
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by LukeProducts
Execute Code on task kill
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| Hi everyone, i'm currently working on a sockets project, and i want to recognize wheather the clients process is killed, but this is not windows topic. My que... |
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Jul 12, 2022 at 3:22am
[10 replies] Last: That is good to know, thanks JL. I have never needed to do that, and... (by jonnin)
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| Further pure virtual calling issues |
| A debugbrk_ call occurs when I try to call pure virtual function Allocate_Square(). The debug call occurs on the first iteration through the inner loop. Stepp... |
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Jul 11, 2022 at 4:18pm
[11 replies] Last: Use a factory method: https://en.wikipedia.org/wiki/Factory_method_pat... (by JLBorges)
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by Hawlong
error C2041 - C2415 - C2426
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| I want to make a dell file, but there are some errors my code #include <Windows.h> #include <iostream> #include <string> #include <TCHAR.H> using namesp... |
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Jul 11, 2022 at 3:21pm
[6 replies] Last: thanks for replay yes i use vs 2010 , I made a lot of dell files wit... (by Hawlong)
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by Worldtreeboy
why is istream::read cast to char*
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| 1. why do I need to reinterpret_cast the 1st argument of read() function of ifstream into a char* when reading a file and also casting the 1st argument of write... |
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Jul 11, 2022 at 10:06am
[3 replies] Last: Unlike other languages (Java, C#, etc.), there is no explicit "byte"... (by kigar64551)
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by JUANDENT
template metaprogrammingNewTupleType_ not compiling
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| I have errors in the following: template<typename TVal, size_t N, size_t M, typename TProcessedTypes, typename ...TRemainTypes> struct NewTupleType_; ... |
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Jul 10, 2022 at 6:05am
[2 replies] Last: Looks like the usage of NewTupleType on line 42 can be replaced entire... (by mbozzi)
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by JamieAl
Error when filling a matrix using Eigen
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| I have the MATLAB code: Nx = 10; Ny = 10; %X,Y defined u = (Y-0.5).^2 .* sin( (2*pi / Lx) * X); %Y.^2 .* sin( (2*pi / Lx) * X); uh = fft(u, ,2); %use discre... |
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Jul 10, 2022 at 3:49am
[5 replies] Last: I did find the issue and to fix it I used seq() instead of seqN... (by JamieAl)
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by JUANDENT
Tag2ID is giving me trouble
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| Hi, I am trying to create a metafunction that returns the index of a type in a list of types (Tag2ID) but am having trouble: template<typename ... |
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Jul 10, 2022 at 1:27am
[5 replies] Last: You're right, thank you. (by mbozzi)
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