General C++ Programming - C++ Forum - September 2022 (Page 2)

by PeteDD

class member array duplicating between instances

I have a class which is passed an array (the address of Dallas temperature devices). The data from ...

[9 replies] Last: If I were to take a wild guess I'd say you ran afoul of the ODR. https... (by mbozzi)

by marhuum

The same to this in a compile time

How to have this at compile time instead for (int i = 0; i < 41; ++i) interval = 0; ...

[8 replies] Last: [quote=JLBorges]https://godbolt.org/z/G5oKx8hEj It should be noted th... (by Peter87)

by mencecpp

Reading output from valgrind

Hello. I am writing a Monte Carlo simulation engine, and I am experiencing what I believe to be memo...

[5 replies] Last: [quote=lastchance]You have the -g flag set in your compile command: so... (by Peter87)

by helios

Graphs

How do you do general graph structures? I.e. those where any node in the structure can point to any ...

[13 replies] Last: Yes, in my Graph structure, Node might have better named "NodeId".... (by Duthomhas)

by leo2008

integer sum problem

I am trying to solve the problem. Is my logic correct? https://www.chegg.com/homework-help/questio...

[14 replies] Last: Here's a couple of alternatives. #include <iostream> #include <strin... (by lastchance)

by PeteDD

Link time error - undefined reference

I'm at a loss (once again). In a class method, I am calling a function of the Dallas Temperature l...

[11 replies] Last: [quote=doug4]If this template function gets expanded and compiled outs... (by Peter87)

by t im

Mutex Test and Set

I read the code about Mutex test below: static int flag=0; void lock(){ while(TestAndSet(&flag,...

[4 replies] Last: Thanks for your reply which makes me figure it out. (by t im)

by raijin011321

Stack

Please help me, lets assume that we have an empty stack in the program when executed. When I pop 2 o...

[6 replies] Last: In the best tradition - 'We'll leave that as an exercise for the reade... (by seeplus)

by adam2016

Integrating C++ frontend with HTML backend?

Hi guys, I was working on a project recently, the project used Python as the backend and HTML/CSS a...

[2 replies] Last: Flask is a small web framework. It's more sophisticated than running ... (by kbw)

by leo2008

vector error

I am trying to solve this in C++. How can I test it? I end up with the below errors while compiling ...

[14 replies] Last: @leo2008, FWIW. my approach was: - DRAW the first example; - think abo... (by lastchance)

by leo2008

array of integer problem

Hi all I am trying to solve this problem in C++. Below is what I am trying to do, but has some lo...

[3 replies] Last: Thanks everyone for your valuable inputs. (by leo2008)

by denver2020

string issue

I am trying to solve below issue. For example, given K = "Test" and string J as follows: "Jowal Da...

[16 replies] Last: 17.1.6 isn't the latest version - 17.3.4 is. Update it! It then compil... (by seeplus)

by jetm0t0

How to get started with my stack?

So I need to write 2 functions using the standard stack container called evaluateInfix() and infixTo...

[13 replies] Last: Ya that's basically the same code I keep seeing. My bad for the confus... (by jetm0t0)

by mbozzi

Can I use std::int8_t* where I want signed char*?

I like to create shorter names for fixed-width integer types: using i32 = std::int32_t; using i64...

[14 replies] Last: Yes I know. I've used C++ since before C++98 - but hands up at the bac... (by seeplus)

by BrainD3ad

File input value as a float?

Hello everyone. I am currently writing a code where it reads a file with information on an item. The...

[5 replies] Last: Thank you so much. I didn't exactly do the same thing you showed but t... (by BrainD3ad)

by t im

Question on Virtual Function

Just as the code below: class A { public: virtual int func(int i = 1) { std::cout << "clas...

[6 replies] Last: What? #include <iostream> class A { public: virtual void func(i... (by keskiverto)

by Hawlong

How to protect dlls?

Hello all , Please, I have two questions, the first : I have a dll file that I inject into a game...

[7 replies] Last: Thanks kigar , i use cheat engine to inject my dll , but game is cras... (by Hawlong)

by newbieg

30/Distance = force

Hello rubber ducky. I'm writing a game that runs at 60fps. I'm trying to come up with a way to push ...

[2 replies] Last: OK. You kind of just rocked my world there. Last time I ran any kind o... (by newbieg)

by JUANDENT

why is it necessary that this code calls std::forward<>?

Hi, I have this code: int retInt() { return 6; } template<typename T> auto f(T&& val) {...

[1 reply] : You don't need to, it does nothing for this example. It would do somet... (by Cubbi)

by JUANDENT

Implementation of std::forward

Hi, Looking at the definition of std::forward, I found this implementation which does not appear ...

[1 reply] : If _Ty is a lvalue reference then _Ty&& is a lvalue reference too.... (by mbozzi)

General C++ Programming - September 2022 (Page 2)

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