please wait
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by FelliYang
May memory leak in vector<>?
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| I am confused about the memory mechanism in cpp, here is a example. { vector<A> a = {A("object1"), A("object2")}; a .print(); a = A("object3"); }... |
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Nov 13, 2021 at 12:04pm
[2 replies] Last: You should consider logging the copy/move constructor/operators. You'... (by kbw)
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by Cplusc
macros
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| Hello everyone. I am writing a finite element code and I want my code works for both 2d and 3d applications. I am writing the code using OOP method and I have s... |
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Nov 12, 2021 at 2:11pm
[7 replies] Last: Thank you all for your answers (by Cplusc)
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by denver2020
Compiler errors in C++ code
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| Hi All Any idea what is wrong in the below code ? #include <iostream> using namespace std; class SomeClass{ protected: int data; f... |
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Nov 12, 2021 at 1:03pm
[3 replies] Last: Here main() is not allowed to access the protected member data of Som... (by doug4)
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by ForgottenLaw
Help in Recursion
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| I'm having difficulties in understanding the logic regarding the recursion? Can someone help me explain how do I get an output of 7 in it? #include <iostream>... |
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Nov 12, 2021 at 9:39am
[1 reply] : It actually adds the digits. In this example 0 + 0 + 5 + 2 = 7 This ... (by coder777)
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by UeleseA
How to use members of class
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| So I have a program written using structs now I want to which it over to a class contacts .duration = contacts .end - contacts .start if(infile.is_open(... |
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Nov 12, 2021 at 9:12am
[13 replies] Last: holy ***** this dude/duddete just saved me I had no idea that float co... (by UeleseA)
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by denver2020
c++ output choice
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| I recently took c++ multiple choice test and below questions are always confusing me. Any inputs? Question1: which of lines of code substituted for occurenc... |
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Nov 11, 2021 at 6:03pm
[12 replies] Last: Q3 has usable snippets. just remove the 1) type markers... removing t... (by jonnin)
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by GroovyJack
Compiler optimization question
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| Can anyone help me explain why one a compiler might perform the following optimization. Assuming all variables are declared and initialized appropriately. ... |
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Nov 11, 2021 at 2:24pm
[7 replies] Last: it varies. My complaint is most docs throw the house on you. me: I... (by jonnin)
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by ForgottenLaw
Recursive Problem Help
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| Hello guys, I just need some help with the code below. I just need to fix it by successfully printing the expected output below. My output: 123456789101112 Ex... |
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Nov 11, 2021 at 1:58pm
[4 replies] Last: Thanks. I appreciate that. (by ForgottenLaw)
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by GroovyJack
Virtual memory paging page replacement?
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| With regard to virtual memory paging page replacement, can anyone explain to me why referenced but not 'modified' pages might be replaced before referenced and ... |
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Nov 11, 2021 at 10:11am
[2 replies] Last: There's also the concept of LRU (least recently used) when deciding wh... (by seeplus)
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by denver2020
C++ Code issue
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| Hi All I am stuck with the below C++ Compiler errors. Any suggestions? #include <iostream> using namespace std; class XXX{ public: int... |
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Nov 11, 2021 at 9:37am
[9 replies] Last: Add the line virtual ~XXX() = default; in the class XXX declaration.... (by lastchance)
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by vidhya5
lvalue rvalue returns.
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| Cam I write a member method called Dereference which will do both these s.Dereference() -> prints the value of the variable. s.Dereference()=4.9 -> sets ... |
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Nov 11, 2021 at 3:52am
[3 replies] Last: Thank you... (by vidhya5)
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| Puzzled by Debug Assertion |
| I'm getting Debug Assertion Failed [File and line equivalent to snippet line 36] Expression: Vector erase iterator outside range This snippet is no... |
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Nov 10, 2021 at 10:45pm
[9 replies] Last: Found it. In several places i intentionally pass RACK by value, which... (by AbstractionAnon)
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by GroovyJack
What would be an appropriate application for static partitioning?
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| I know that static partitioning is used for Predetermined, fixed sized, unchanging memory blocks, process(es) start initially and stay in the system, that new p... |
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Nov 10, 2021 at 8:06pm
[1 reply] : What is your answer and reasoning? (by AbstractionAnon)
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by GroovyJack
Scheduling systems: batch vs preemptive
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| I'm having trouble understanding the thorough differences between the two, but I know it is in the following: For Batch: -Processes are preempted in order t... |
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Nov 10, 2021 at 5:18pm
[3 replies] Last: Perfect. (by Duthomhas)
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by jessiej6
1
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| 123 |
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Nov 10, 2021 at 12:17pm
[2 replies] Last: When you post code, please use code tags and sensible indentation. See... (by keskiverto)
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by jessiej6
What does this program do? Can someone kindly shed some light on this for me please.
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| #include <iostream> #include <iomanip> #include <random> #include <array> #include <ctime> using namespace std; unsigned int rollDice(... |
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Nov 10, 2021 at 2:17am
[no replies]
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by jessiej6
What does this program do? Can someone kindly shed some light on this for me please.
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| #include <iostream> #include <array> using namespace std; const size_t arraySize{10}; int whatIsThis(const array<int, arraySize>&, size_t); //... |
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Nov 10, 2021 at 2:16am
[no replies]
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by denver2020
template class with .inl logic
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| How can I create and implement a template class with *.inl implementation in c++ using vs 2019? I also need the steps to compile it as well. |
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Nov 9, 2021 at 5:58pm
[5 replies] Last: Ok understood, thanks to clarify. (by denver2020)
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by darkdave
Scripting language for level creation
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| I'm an OpenGL C++ programmer writing astronomy-physics simulators such as Kerbal. My website is photonbytes.com I'm completely unfamiliar with commercialscri... |
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Nov 9, 2021 at 4:25pm
[6 replies] Last: Lua is good but do you need it? It may be like using a flamethrower to... (by jonnin)
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by jreef
Help with nan issue
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| I'm smoothing position data read in from an external source then executing a finite difference to get velocity... I am also smoothing both results. The smoothin... |
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Nov 9, 2021 at 3:53pm
[10 replies] Last: I suspect you're loop is running multiple times in the same millisecon... (by dhayden)
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