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General C++ Programming - September 2021 (Page 2)

There are two numbers written on a board, A and B. If A and B are divisible by P, where P is a certain prime number, we can replace A and B with respectively A/...

Sep 26, 2021 at 8:18am

[5 replies] Last: For 70 and 84, - divide each by 7 gives 10 and 12 - divide the first b... (by lastchance)

by EmilyC137

How does one get the width of an general int (1,2)

My goal is to set only the high bit of a general int. I would like to use it as a constant for speed considerations. I can calculate the high bit and it is de...

Sep 25, 2021 at 7:11am

[23 replies] Last: Implementing a Fourier transform? (by mbozzi)

by vvartani

PLEASE HELP!! THIS IS DUE IN 13 HOURS!

PLEASE HELP A COMP SCI MAJOR STUDENT OUT!!!!! (this is due in about 13 hours) I need to Approximate the area of a quarter circle by using 10,000 rectangles. I ...

Sep 24, 2021 at 8:21pm

[10 replies] Last: thank you everyone for your help, please forgive my obvious errors I a... (by vvartani)

by suslucoder

How to reset ethernet settings?

Hi everyone. I want to write a code for reset the ethernet settings. Is it possible to do such a thing? If I can do it, this exe will run on windows os. Tha...

Sep 24, 2021 at 11:59am

[4 replies] Last: What is "ethernet settings" anyway? In firmware of card, in UEFI nvram... (by keskiverto)

by azenda

An array of pointers to arrays of derived objects?

Hello, I have a base interface and a few classes derived from it, holding similar but different data. I need a few arrays of same derived classes and would l...

Sep 24, 2021 at 11:52am

[9 replies] Last: I'm not sure (not tested) if I can simply use derived classes in a st... (by MikeyBoy)

by Bamboo445

Screen capture performance with directx

I am trying to make a fast screen capture with direct x, but the performance is horrible.. This function GetFrontBufferData is some horrible crap.. It takes aro...

Sep 24, 2021 at 12:54am

[no replies]

by volang

Does all std functions throw exceptions?

Does all standard functions throw exceptions? Or only the ones that have specs where it's mentioned ?

Sep 23, 2021 at 9:12pm

[7 replies] Last: right, a thing to consider is many library functions work with user-de... (by Cubbi)

by closed account oj1C54Gy

Linked List Delete won't work

I was task to create a linked list and it must be menu driven I already finish the other parts but the delete a record won't work and it just delete the first n...

Sep 23, 2021 at 8:46pm

[6 replies] Last: In case anyone in the same class is following along... Notice that ch... (by dhayden)

by javasucks

Need Library for digital to analog conversion: any help?

I need to find a library for robotics that lets me change audio from a file, digital, to analog output. 3 pins the cable is. im newer to C++, but I can work out...

Sep 23, 2021 at 2:34pm

[5 replies] Last: will openal work on this thing? I am pretty sure it will do what you... (by jonnin)

by dorito200

operator overload from setfill? weird error from code

Hey yall, I was working on my code for class and I ran into this error with this chunk of code. I can't seem to work out exactly what the problem is, but I do k...

Sep 22, 2021 at 9:52pm

[2 replies] Last: That worked! I took a bit of editing since the characters started disp... (by dorito200)

by JamieAl

MATLAB vs C++ Outputs not matching

I have the following function of sum of sines and cosines in both C++ and MATLAB and I am using this function for testing purposes. However, for some reason the...

Sep 22, 2021 at 9:39pm

[10 replies] Last: Hey everyone! It seems the issue was a huge "round off" error. I didn... (by JamieAl)

by GroovyJack

Help with Socket Programming code

Here is the code in question in C not C++: // Example socket client #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include ...

Sep 22, 2021 at 6:12pm

[2 replies] Last: It seems you're learning it backwards. Ideally you'd learn a bit abou... (by kbw)

by elviabarrera

Problem with static queue c ++

Hello this is code, but not show list help me please #include <iostream> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h>...

Sep 22, 2021 at 4:15pm

[3 replies] Last: Line 16: You're assigning a pointer to itself. That does nothing. R... (by AbstractionAnon)

by Silver29

Infinite loop when a letter is an Input, any fix?

Hi, I got this problem where the program just infinitely loops when a letter is an input instead of a number. it happens in line 36-76 and same as the next one....

Sep 22, 2021 at 6:13am

[3 replies] Last: Anywhere your stream may fail, you should have: if (cin.fail()) ... (by zapshe)

by linklance

Help with Event Simulation Program

GitHub URL: github.com/CIS-3207/project-1-fall21-tui92851 File: lab1.cpp can be found in .github folder --------------- I'm having issues when going through...

Sep 22, 2021 at 1:56am

[1 reply] : If you debug and go line by line in the while loop you get an idea of ... (by linklance)

by mzimmers

replacing function name

Hi all - This question is equally applicable to C and C++, I believe. I'm working on porting an application. I'd like to replace some function names witho...

Sep 22, 2021 at 12:45am

[6 replies] Last: yea that was the 'wrapper' idea :) but you are totally correct. (by jonnin)

by GroovyJack

Help with Process Synchronization (C not C++)

Please help me solve parts a, b, and c, it is confusing me and taking me forever because I don't know what to do. Code in question: // A simple readers/writ...

Sep 21, 2021 at 8:54pm

[2 replies] Last: > Please help me solve parts a, b, and c, ¿did you solve part zero? ... (by ne555)

by dorito200

division for a counter??? help please!

Hey yall, this is part of a big assignment I have coming up and this part has put my progress at a dead stop. The question itself is: "Create an integer var9...

Sep 21, 2021 at 7:35pm

[2 replies] Last: #include <iostream> int main() { // Create an integer var9 and ... (by The Grey Wolf)

by Armanc

How to not change original array values when using recursive function in C++?

I am using a function to change the array's elements. Basically, it merges two elements and puts them to the first element of the array and returns it. After th...

Sep 21, 2021 at 6:04pm

[3 replies] Last: Aarrgh! That's the worst way to solve it! What that does is create a ... (by Duthomhas)

by TinnyMintz

Need help starting/doing this lab

I need help with this problem, its supposed to read from an input.txt file, do what it says in the requirements section, and produce an output.txt file with the...

Sep 21, 2021 at 3:12pm

[7 replies] Last: I really don't know how to do any of those things It sounds to me l... (by dhayden)

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