General C++ Programming - C++ Forum

by SPP

How to convert C++ member function pointer to C function pointer? (1,2)

#include <iostream> using namespace std; class Printer { public: void println(const char* ...

[24 replies] Last: Interesting. Thanks. (by SPP)

by rjphares

Segmentation Fault

The two lines with "error: segmentation fault" comments are causing segmentation fault. Does someone...

[8 replies] Last: Just practicing data structures. Just wanted to create an array of use... (by rjphares)

by deathzine

looking for some guiding

hi there, today I went to StackOverflow and I find some interesting code there "https://stackoverflo...

[1 reply] : ignoring scanf, c++ is true if not zero, and false for zero. Boolean ... (by jonnin)

by OwnedPeace

Copy 2D array to another 2D array.

Hello. Asking for help about copying 2D arrays. For example : I have an array - float a . Users ...

[2 replies] Last: @Repeater , thanks, was using the same thing, but seems that something... (by OwnedPeace)

by salem c

Help with 2D arrays based on user input

The first thing to do is list your requirements. • Calculate and store all windchill values in a t...

[2 replies] Last: Well now you need to separate the calculation and printing into separa... (by salem c)

by Pararera

Replacment for sscanf

Hi guys. I need function that from data(from Serial port on Arduino) extract "commands" and values. ...

[6 replies] Last: Code will process around 10 commands per minute. It can do 100 command... (by Pararera)

by Punicher1990

IMPORTANT

, i need to transform a basic taylor series function with integer coefficients ,to an equation...

[7 replies] Last: https://math.stackexchange.com/questions/502160/exponential-function-a... (by lastchance)

by GG00

Polling loop queue

Need help with this homework don't know how to start create the polling loop In the main() function...

[3 replies] Last: tx.readFromSender(int arrayLength, char rv )) That's not how to cal... (by Repeater)

by TreeTicket

Visualizing my Matching Engine

I recently build a matching engine and would like to build a visualisation of it similar to this: ht...

[1 reply] : > a visualisation of it similar to this I have no idea what that's rep... (by ne555)

by Cambalinho

just a token question

A Boolean\Math expression is a combination of tokens(Operators, ID and others): a = b + 1 but corr...

[4 replies] Last: thank you so much for correct me... thank you... i was asking because ... (by Cambalinho)

by julie2019

Provable Functions at CppCon 2019

Rob and Jason are joined by Lisa Lippincott in this special episode recorded at CppCon. They first d...

[no replies]

by Repeater

GUI Creation for C++ app

You don't have to switch IDEs. The QT libraries and headers are just libraries and headers. You can ...

[2 replies] Last: The now expected cross post from reddit: https://www.reddit.com/r/cpp... (by deleted account xyzzy)

by adam2016

Problem capturing webcam (ESCAPI)

Hey guys, I'm using ESPCAPI - https://github.com/jarikomppa/escapi to capture my webcam, but when...

[5 replies] Last: Print the working directory of your program by doing system("cd"); . ... (by Ganado)

by nurulhudaismail

reverse bit of a vector

Hello, If I have a vector of complex<double>s = { { {1,0}}, { {3,0}}, { {6,0}}, { {2,0}}...

[9 replies] Last: I'm still not sure if OP is trying to reverse doubles or if he has som... (by Duthomhas)

by halbmondklin

Set reference of an abstract class by initialization list

I need to call an object of a class that initializes an interface by reference, the problem is that ...

[2 replies] Last: A reference is a synonym for another object. That means the other obje... (by dhayden)

by An Integer

Repeating contents of a char array if size < than X

I am wondering about how one could repeat the content of a char array if the size of the array is le...

[4 replies] Last: Thank you so much @lastchance ! That really did the trick. The "thing... (by An Integer)

by CodingIsHard17

Rand() and Quicksort

I am trying to sort the following code using quicksort by low to high. With the output in a separate...

[5 replies] Last: for this simple example, you would just code quicksort as a function, ... (by jonnin)

by ne555

Array problem

¿how big is n? ¿what time complexity would you allow?

[4 replies] Last: These kinds of problems require some mathematical knowledge. You have ... (by Duthomhas)

by VictoryCFC

Need help with programming class task!

I just started this university course and there is a programming module which I am terrible at :( ...

[6 replies] Last: As I replied in your other post on the same topic (please don't create... (by deleted account xyzzy)

by Viprous

Need help with simple programming assignment

Greetings!!! Normally I would consider myself an ok programmer, but my professor has clearly stomped...

[5 replies] Last: @Viprous, You just need two operators: / ++ (by lastchance)

General C++ Programming - September 2019

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