General C++ Programming - C++ Forum

Can you help me finish the Galton Box program? Here is what I have so far: #include <iostream> #include <ctime> #include <cstdlib> using namespace std; int m...

[6 replies] Last: drops must equal slots minus 1. (by YeetParadox)

by adam2016

simple encryption program problem

Hey guys, I am doing research/ a project on cryptography and how attacks on ciphers work, so I made a simple program to encrypt and decrypt a message, it is ...

[6 replies] Last: its a LOT easier if the hacker can send his own plaintext message and ... (by jonnin)

by warkmich

Selection sort a linked list

Hello, I am trying to programm a linked list with some extra methods, which are "sum", which adds up all the numbers in the linked list(isEmpty is implemented)....

[5 replies] Last: I did nothing but muse at you (literally inspired you to get to work),... (by jonnin)

by tenkman

Roulette Color Streak Program (1,2)

Hi all - Brief history - long time back I wrote a VB program to simulate spinning a roulette wheel and was curious what the longest streak of any particular c...

[38 replies] Last: if the PRNG uses a 3 bit seed then it's likely to have a cycle afte... (by MikeStgt)

by Fadey

inheriting referencer/data class as template, should I optimize getData()?

Sometimes coming up with a good title for topic seems harder than the problem itself in the topic. I have: template<class T, class dataType> class someContai...

[5 replies] Last: is this even remotely useful... class 1 creates the thing via a point... (by jonnin)

by closed account ywbpSL3A

Copy Control and BST

I've just started the Copy Control chapter in C++ Primer (5th Edition) and stumbled upon a vague exercise, which is as follows: Given the following classes, i...

[2 replies] Last: I guess that clears things up. Is the below implementation/design some... (by closed account ywbpSL3A)

by steven90

need hlp

Write a program which accepts an account balance and computes any service charge. Balance Service Charge < $300 ...

[2 replies] Last: Aside from the rubbish titles and lack of effort, we have multi-postin... (by salem c)

by pedalowski

Problem with SDL | Can't install/prepare it

Hello, I have a problem with compiling my SDL code in Dev-Cpp I did all the instructions from http://lazyfoo.net/SDL_tutorials/lesson01/windows/devcpp/index.php...

[6 replies] Last: You, uh, should be installing SDL 2 , not working with the old SDL. h... (by Duthomhas)

by kapil2905

Direct vs Copy initialisation with explicit copy constructor. Why we get the following error ?

class K { public: int x_; explicit K(int x) : x_{x} {} explicit K(const K& k) : x_{k.x_} {} // No error is seen if this is made }; ...

[1 reply] : See Notes under https://en.cppreference.com/w/cpp/language/copy_initia... (by JLBorges)

by kindgnice

How To Interpret std::map Partnered with glm::ivec3 and Struct?

Hello Professionals, Good day. I came across this programming troubleshooting problem wherein I am trying to print the value of the key of a certain std::map...

[4 replies] Last: Thank you very much for all your help about the g_polCoeff. I found th... (by kindgnice)

by JUAN DENT

function call not recognized as constexpr unless function definition is in same translation unit

Hi, I have this definition in file a.cpp: constexpr long fibonacci(long n) { return n <= 2 ? 1 : fibonacci(n - 1) + fibonacci(n - 2); } and I...

[2 replies] Last: Thanks Peter87! (by JUAN DENT)

by elsa

Can't create two different queues using one template queue

I get an error on stringQueue.enqueue(name) and stringQueue.dequeue(name) underneath "name". The error I get is "cannot convert argument 1 from string to in...

[2 replies] Last: That fixed it, ne555. Thank you. (by elsa)

by naeimsalib

Opertor = is not working

struct PID{ PID operator= (PID &rhs)const { PID lhs ; lhs.processId = rhs.processId; std::cout<<"rhs process id is : " << lhs....

[3 replies] Last: if(rhs.Childs.size() != 0 ){ for(int k=0; k< size... (by ne555)

by ksolo7

Having trouble pulling boundary data points from input file

I have an input file that consists of data in the form "Celsius,Resistance", for example one point is "9,10440" which stands for a temperature of 9 degrees Cels...

[5 replies] Last: This has been continued in another thread (wish this didn't happen!): ... (by lastchance)

by hassanAman

Visual Studio Executable (1,2)

Is it possible to run a program without needing extra files? For example, if I have a 3d game that has 3d models, and those models are stored in .obj files. ...

[20 replies] Last: I think there is a lot of missing the point going on here. There is n... (by Duthomhas)

by Ojies

Input loop isn't working properly

There is a loop from lines 750-970 that has 2 options in an if statement for when you input a string for the variable "input". When it asks you to input somethi...

[2 replies] Last: There is a loop from lines 750-970 that has 2 options in an if statem... (by doug4)

by ashebynova

My last name won't display

The code is suppose to gather phone numbers using structures. I don't know what to do because the string won't output a last name. Example: Use 1 student then ...

[3 replies] Last: use code tags Little subject drift, what is described it http://www.... (by MikeStgt)

by Googie85

Client/Server File Send - Losing Data

I am having a few issues with a file transfer over a network. I am losing data at the end of each file that I send. Here is my code: Client: #include <stdaf...

[2 replies] Last: Thank you soooo much for your reply... i will try and get this to work... (by Googie85)

by ChrisPy

Alphabetic Order Algorithm

Hi guys...(I can start this topic with :"Sorry for my english") I'm having few problems with my code, to say the truth I don't know what is the problem... but...

[4 replies] Last: thanks a lot, now i don't have time, it's morning and i have to go sch... (by ChrisPy)

by PistolPete10

I need help with this structures program

I am writing a program to display two student's grades and if they are a OK GOOD or EXCELENT student, and for some reason when it won't let me enter the p2 pers...

[4 replies] Last: In addition, you do not need for every person its own function. To do ... (by MikeStgt)

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General C++ Programming - April 2019 (Page 4)