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General C++ Programming - November 2017 (Page 3)

by MRH

how can i make that when left click is held it sent infinite left click, and when its no longer held it stop the infinite loop. i tried: while (GetAsyncKeySta...

[3 replies] Last: I think you still need an extra condition. I think you need while (... (by jonnin)

by SSteven

string literals of different character encodings

I am trying to create string literals of different character encodings: 1) UTF-8 string literal (using prefix u8"string") 2) char16_t string literal (using pr...

[1 reply] : There is std::wcout , but in cpp.sh it only worked for the last one. ... (by TheIdeasMan)

by AlexanderGreen

C++ SDL 2.0 main menu Function

I'm currently trying to write a menu function for one of my projects. I'm remaking pac-man and I'd like to be able to modularize the main menu ,calling it when ...

[1 reply] : I would suggest not to use outdated function. If you have these old fu... (by coder777)

by stav

library on top of library

Hi i'm trying to build a 2D game engine on top of SDL. In my "engine" folder i have a file called my.h which is what i expect the end user to include in his p...

[1 reply] : For a pointer you can always have a forward reference (like struct SD... (by coder777)

by Rododendron

Advance reading from file

Hi! I tried to find an answer, but I couldn't find anything on this. If I need to read from file such line: 2017-10-11,2550.620117,2555.239990,2547.949951,25...

[3 replies] Last: OOOOOOO, thank you for help so much :D problem is solved And yeah I ... (by Rododendron)

by jbenne85

Connect four trouble getting pieces to stack

// Connect 4our // Created by Gregory Hagins II on 11/2/17. #include <iostream> #include <string> #include <ctime> #include <cstdlib> using namespa...

[no replies]

by xokittenxo

Help please with receipt calculator!

How do I get this to work properly... I want it to output the item price and sales tax and total with sales tax for each item the user enters. And the it...

[3 replies] Last: @xokittenxo You're welcome. If you do have any questions or just want... (by whitenite1)

by chester56

quicksort algorithm problem

I attempted a quicksort algorithm with a 10 element array but there seems to be a problem. After it is sorted, the second element in the sorted array is always ...

[1 reply] : quicksort should be recursive. It looks close but it is missing the r... (by jonnin)

by programnick

Explanation c++

What kind of array is in each row of argv?

[1 reply] : http://en.cppreference.com/w/cpp/language/main_function (by keskiverto)

by NG99

update and delete the record from text

how to use the c++ to write the code : case 1: how to write the code for update the record (string) from the text file. can anyone show me some simple...

[3 replies] Last: If you need such thorough examples, then you really should be consulti... (by Chervil)

by michee65

Binary Search Tree sorted by two keys

I have a fictional character class with a unique string member variable, name, and a second member variable that can have duplicates. The unique key is the name...

[1 reply] : Typical use case for Boost.MultiIndex, perhaps: http://www.boost.org/d... (by JLBorges)

by venivediveci

Insertion sort for Linked lists

This assignment consists of getting linked list and sorting it using Insertion. I have completed the appending and printing part but having trouble to move past...

[no replies]

by Syrian Lucianos

A problem with overloading the >> operator for a custom array class

Hello everyone. i'am making a simple class for dynamic arrays in C++: #include <iostream> using namespace std; template<class T> class Array { ...

[1 reply] : T& operator (int index) return a reference (not a value), so you can... (by ne555)

by serstop

C++ Programming for the Absolute Beginner

Hello everyone! So i started reading this book it is called ,,C++ Programming for the Absolute Beginner, Second Edition" by Mark Lee and Dirk Henkemans.I am no...

[1 reply] : If you want to know the "why" of author choices, ask the author. Don... (by cire)

by Morapoly

new int with no overwrite

I have a int* that named arr and have a function that called in main(); this function named push_back that add a int to arr; I also have a function named pop_ba...

[1 reply] : actually, they aren't being deleted, they are simply lost, drifting in... (by ne555)

by drudox84

how to convert block compressed row to dense matrix?

I'm interesting to create a class for storing sparse matrix in Block Compressed Sparse Row format : https://ibb.co/ffrKDR (picture) this method of storage co...

[1 reply] : I've figure out the way to plot the "blocks matrix" the smaller in the... (by drudox84)

by kimchiboy03

What is wrong with this binary search algorithm

Hello, I have currently written a code for the binary search algorithm. However, the code does not seem to be working when I input a vector of {2, 4, 3, 1}. Can...

[4 replies] Last: One way to do it is to simply copy the C++ code from the website you l... (by Chervil)

by blanm

Route planning algorithm (1,2)

I have a design project for an engineering design course, the goal is to design a tunnel system beneath the Queen's University campus (in Kingston, Ontario). It...

[21 replies] Last: Well, I'm not sure about the GPS in a phone, I might try it at some po... (by blanm)

by Fillip F

odd and even mouse clicks

We've been tasked to make a tic-tac-toe game but it seems like were all getting stuck on alternating between X and O and instead each click outputs and X in a b...

[2 replies] Last: The way we were taught to do it today was with all the if's, i agree i... (by Fillip F)

by DragonOsman

Range-checked list class?

How do I make a list class range-checked? The code I'm using is here: https://gist.github.com/DragonOsman/87a1e9fba06d49cab9b5b556c7dd31eb (too long to put in ...

[6 replies] Last: So I shouldn't check for cur->succ being nullptr in increment? I fi... (by DragonOsman)

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