please wait
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by sparki
pixel function C++
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| I have been trying to get the function pixelData() in class background below to work but to no avail. Could someone let me know how to go about implementing it?... |
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May 25, 2019 at 1:00pm
[5 replies] Last: what error? I see nothing wrong there (by jonnin)
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by sturk
Unable to get center() function to work properly
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| My center function in class Point below doesn't work as I want it to. In my main, when I reduced 'Point.center().x()' to 'Point.x()', it compiles fine and outpu... |
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May 25, 2019 at 12:58pm
[4 replies] Last: Alright I solved it! Thanks again jonnin for your invaluable explanati... (by sturk)
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| Getting started with backtracking |
| Hi there! I im interested in learning backtracking properly. Where can I finde some tutorials where they show the algorithm well explained? Im coding with... |
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May 25, 2019 at 2:55am
[1 reply] : It is shockingly easy, especially if you are using recursion. For exa... (by Duthomhas)
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by cs13
Confused with namespaces and templates
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| I am using the DIPlib code obtained from https://github.com/DIPlib/diplib I have a simple program using code from it: #include <iostream> #include "diplib.h... |
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May 24, 2019 at 11:10pm
[9 replies] Last: This took me about 2 minutes to pin down on the site. First, the retu... (by Niccolo)
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by petrean
Expeceted ; when I have one
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| Hi Sorry I this may seem like a stupid question but I am a beginner in C++, I really don't knonw where this error is coming from because at the previous line o... |
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May 24, 2019 at 10:59pm
[10 replies] Last: [quote=man gcc]-E Stop after the preprocessing stage; do not run the ... (by ne555)
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by vysero
Trying to understand this line of code
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| I have this line of code here: m_delayOn( new GallatinCore::SettingValue( DelayOnStr, CommonJobData::DELAY_DEFAULT, CommonJobData::DELAY_DEFAULT, CommonJ... |
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May 24, 2019 at 8:52pm
[3 replies] Last: never mind I figure out how to do this in a different way thanks guys! (by vysero)
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by GodIsDead
Do I use dynamic memory correctly ?
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| Hello, I'm a new dynamic memory allocator :) I'm working on projects for microcontrollers like Arduino, so I want to reduce memory usage of my code, as much a... |
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May 24, 2019 at 8:49pm
[9 replies] Last: Ok, thank you all for answers, especially Niccolo :) I'm still not su... (by GodIsDead)
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by Kmirich542
Cookie PickUp Inheritance Game
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| I'm writing a code for class that is an inheritance pick up game, we were tasked to limit the player to the play area, so not allowing them to move outside of t... |
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May 24, 2019 at 6:38pm
[2 replies] Last: - CookieCollect::SetupScreen() should call PickupGame::SetupScreen() -... (by dhayden)
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by Deadweight77
Whitespace question
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| I've been working on a banking system where you have a few options of what you can do. I'm not that far in, but I'm in need of help when it comes to whitespaces... |
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May 24, 2019 at 4:52pm
[5 replies] Last: A stream is a stream, whether it is std::cin or a file. If you need... (by deleted account xyzzy)
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by kitfox
Do I need to worry about allocating lots of tiny arrays?
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| I'm writing a program that needs to keep track of user defined attributes. I have a class that describes the details of the attribute, along with a pointer to ... |
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May 24, 2019 at 2:23pm
[12 replies] Last: A gigabyte is really REALLY big. Heck a megabyte is pretty big. As a... (by dhayden)
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by Orion98
Ranked Choice Voting
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| I'm currently writing a program where it performs a series of ranked choice elections based on an input text file containing 3 sets of 5 ballots of the voters' ... |
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May 24, 2019 at 1:51pm
[5 replies] Last: I realized the rounds were optional If the rounds are optional then ... (by dhayden)
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by aligh
Why the cryptic style?
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| This is the behavior of the STL unique_copy function, according to cplusplus.com: template <class InputIterator, class OutputIterator> OutputIterator uniqu... |
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May 24, 2019 at 1:40pm
[3 replies] Last: Ahh, thank you! Now, I see! (by aligh)
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by sturk
C++ operator test failed
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| I have been thinking for a while now why doesn't my operators work properly when I get to the condition if (v4 * v5 == x1 * x2 + y1 * y2) in my main. But just c... |
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May 24, 2019 at 8:24am
[1 reply] : @playpro, One has to to do rather a lot to get your code to compile: i... (by lastchance)
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by Pashketi
Stuck on a 0.
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| So, I'm kinda new to this and i took an extra course in my school to learn programming. Got this task and i tried to write a program to count it, but it keeps t... |
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May 24, 2019 at 7:34am
[18 replies] Last: Naming aside, the thinking in these: OP: the "n" is how much more has... (by keskiverto)
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by sturk
C++ overloading operator
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| I can't seem to get the correct output when overloading the *operator to find the dot product. Would appreciate if anyone could help. Correct output: 38.45 My... |
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May 24, 2019 at 7:09am
[3 replies] Last: Thanks guys:) (by sturk)
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by david73
Dynamically allocate 2D array
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| Hello, I'm trying to dynamically allocate 2D array. I have this function: int **read_matrix(FILE *in, int *count) { int **matrix = NULL; char *l... |
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May 23, 2019 at 11:45pm
[5 replies] Last: In your second realloc, you are assuming that matrix[i-1] will be NULL... (by dutch)
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| Remove ellipse from canvas |
| I am trying to draw ellipses on a canvas on left mouseclick, which must be removed on right mouseclick. Below is the essence of my code. This code is removing t... |
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May 23, 2019 at 7:06pm
[4 replies] Last: Yes, that looks fine. Make sure you properly find the object in your l... (by Duthomhas)
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by adam2016
Algorithmic notations
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| Hey guys, So my question may sound strange but it isn't a question about algorithm time complexity such as big O notation, my question is about the notati... |
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May 23, 2019 at 6:57pm
[7 replies] Last: +1 on signing up for a class on design and analysis of algorithms. You... (by Duthomhas)
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by tixer
Program that reads text from file and outputs each line to the screen from another file
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| I am failing to copy the file to another file preceded by Number line #include <fstream> #include <iostream> #include <cstdlib> #include <iomanip> using ... |
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May 23, 2019 at 6:27pm
[3 replies] Last: ok. now put it in code tags <> on the side bar editor, and explain wh... (by jonnin)
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by jxr006
Heartbeat per second, losses time on computation
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| Hey folks, I have a business case where i want to post a heart beat per second. The problem is the code run slow is down by a few miliseconds that over time, it... |
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May 23, 2019 at 5:39pm
[6 replies] Last: I'm sure sleep_for() just uses Sleep() (or whatever underlying functio... (by helios)
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