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General C++ Programming - September 2018 (Page 9)

I'm sitting in the local pub, one of my co-workers just stormed out after throwing her beer on my other co-worker. Monday morning is going to suck. The definiti...

[5 replies] Last: I would nest classes if the inner class were inherently part of the ou... (by doug4)

by piyushpes

Understanding of the polymorphic behavior in case of custom exceptions

Why does the 2nd std::cout in the below code prints the "std::exception" and not "Ooops!"? As per my understanding, since ooops class is derived from std::exce...

[1 reply] : Like the comment says: throw can make a copy. The p is a std::excepti... (by keskiverto)

by elsa

Data Structures: need help fleshing out my functions

This assignment has me flustered with nowhere to go -- confusing to the extreme. I'm a novice to data structures, and this week's homework assignment has me los...

[2 replies] Last: Check your text book and look at what a linked list is. (by DefinitelyNotPalpatine)

by reversestack2

Extract value from key-value pair in substring

Hi, I have a very large std::string (~500,000 characters) and need to extract certain smaller strings out of it (but only the value in a key-value pair). For e...

[1 reply] : Do you mean something like this? #include <iostream> #include <stri... (by tpb)

by Amrello

extern "C"

Hello everyone, maybe it's a stupid question but in interrupt handling function I can't rewrite a variable. I'm sure that the interrupt is triggered and assigns...

[3 replies] Last: initialise it first, then you'll know for sure if the ISR was called. ... (by Jaybob66)

by volang

Char array, extra garbage from buffer

I create an char array (my_c_array) of size 50, then I read in exactly 50 char from a buffer... Now I wonder...Why do I get extra garbage charecters when I d...

[10 replies] Last: Thanks man, appreciate it (by volang)

by SimpleCoder

Creating an Application Logfile

I'm an inexperienced C++ novice, coding for a hobby. Class A and Class B encapsulate my data, and they contain all the public getter and setter functions for t...

[6 replies] Last: I had to make some changes because VS2017 generated a security-related... (by SimpleCoder)

by technologist

problem with scope operator

I am having difficulty sing objects with the scope operator (::). I don't have any issues writing for (.) or (->) but I am doing something really ridiculous wit...

[2 replies] Last: I don't want to "critique" the answer but it was thorough, clear, conc... (by technologist)

by javyesco

Inheritance Game Class

So I need to make an inheritance between the USER class and the Player class; I have more classes to add but I believe that if i'm able of at least understandin...

[2 replies] Last: I think I get what you're, saying, let me see if I can do this. Thank ... (by javyesco)

by daryledevs

How to change fonts (graphics.h)

Hi! I am just a beginner and this is also for my project. I just wanna know if is it possible to edit the specific word or string, font. I would like to change ...

[8 replies] Last: ohh... i see. Thank you so much sir! Sorry for being too slow. Welll, ... (by daryledevs)

by ardavan

log_target_->pt_->dump();

what is the meaning of this code? log_target_->pt_->dump();

[1 reply] : It dereferences log_target_ to get an object. Then it dereferences the... (by dhayden)

by cgm2k7

Create File.dat in c

olá pessoal bon dia! Venho aqui mais uma vez pedir ajuda... Estou criando um projeto, que preciso criar uma criar um arquivo binário com varais imagens ...

[16 replies] Last: help-me (by cgm2k7)

by PonasM

Merge 2 versions of a file

Hey guys I was just wondering if there was some kind of a library or something that would take 2 versions of a file and would make a third file with attributes ...

[3 replies] Last: Any revision control system like Git or Subversion does this. The olde... (by Duthomhas)

by fewdiefie

building a library

I need help to build the following 3D engine https://archive.codeplex.com/?p=hieroglyph3 using visual studio 2017, I get a lot of errors related to DirectXTK, p...

[2 replies] Last: I will telepathically understand what your problem is *BLAM* You're ... (by poteto)

by rodmac74

neural net code problem

Hi all, New to coding and forum, hoping to get assistance in getting up & running with an artificial neural network code using arrays & for loops. General p...

[1 reply] : "in" is a 1x4 array which means the first index can only be 0, but you... (by tpb)

by sanlys

Overwriting array values(noob)

Hi i'm a total noob to c++ and programming in general. i followed some tutorials and i think i know a little bit of what something mean(lol) so i tried this ch...

[2 replies] Last: PLEASE learn to use code tags. It makes reading and commenting on your... (by closed account E0p9LyTq)

by JUAN DENT

How can we serialize an arbitrary class?

Given this class: struct Address { string street; string city; int suite; friend ostream& operator<<(ostream& os, Address& adr) { ...

[2 replies] Last: Thanks for this simple solution. I am going to investigate boost::seri... (by JUAN DENT)

by JaJangMyeon

Access to base class from derived class

I realize this is probably a very easy question for most. However, can anyone tell me how to modify this short piece of code so that the values printed to the s...

[3 replies] Last: I want to thank you both (mbozzi and Peter87) for your answers; Peter8... (by JaJangMyeon)

by Ozzy69

Can you help me with this exercise?

The triangle of Pascal is a numerical triangle formed by binomial numbers (n k) where it represents the number of the line and represents the number of the col...

[1 reply] : The second condition in the if statement should be k==0 rather than n=... (by lastchance)

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