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General C++ Programming - March 2018 (Page 12)

Printing contents of vectors in a linked list

Hi there, I'm still working on the same family tree program and converting it into a linked list (next improvements will be virtual functions); but I'm having t...

[1 reply] : void Male:: displayWifeChildren (string p1) { familyNode* newNode... (by ne555)

by briankiprono

loops and answers

Im having trouble setting up a loop where an answer got is used again next in the loop.Can anyone write any simple code of your choice for me Thanks.or maybe 1*...

[1 reply] : int answer = 1; for (int i = 1; i < 11; i++) { answer = answer * i... (by Repeater)

by jhonx234

Please help my getgpa function is not reading data

Hello guys, my GPA function is not reading data from the courses. I can't find a solution. I'll be glad if any of you help me. #include <iostream> #inclu...

[4 replies] Last: how can i pass that student to the function? (by jhonx234)

by ratteng

Displaying the maximum sums of subsequences and its subsequence values

Hi I made this program expecting it to return the maximum sums of subsequences of the given integer array but also returns/outputs the actual subsequence where ...

[2 replies] Last: Oh I commented that part in the code I don't remember why (by ratteng)

by adam2016

QT installation problem

Hey guys I'll start of by saying I'm new tp qt.I decided to try download qt,its something that has interested me for a long time but only now am I getting into ...

[no replies]

by edge6768

Why is this not reading as a sting?

Hi all, It's been a while since I've programmed in C++ but the below: ifstream fin("SMX_Test.csv"); assert(fin); vector< vector<string> > SM_Invoice; vector<...

[2 replies] Last: Might be easier to create a struct for the data and use simple vector.... (by Thomas1965)

by Ammy420

Please explain this program

Can somebody explain this program line by line in simple words i am new to c and c++ so i just know about basics i want to know about the keywords and functi...

[3 replies] Last: ip.type = INPUT_KEYBOARD; ip.ki.wScan = 0; ip.ki.time = 0; ip.ki.dwE... (by Thomas1965)

by joshgarza

Merge a linked list with another linked list O(1)?

I am supposed to merge one linked list with another linked last so that the first linked list is empty. My prof want's it to run in O(1) time but how is that po...

[5 replies] Last: Apparently "merge" as in "concatenate", "append", or "transfer content... (by keskiverto)

by Chaost

Detect numeric keys with few statements

I have to detect key input from the keypad (1-9) as well as whether CTRL/SHIFT/ALT was held down at the same time. I'm currently using multiple GetAsyncKeyState...

[2 replies] Last: That's the solution I ended up with, seems it's the tidiest way to acc... (by Chaost)

by Dish5oap

Err C2228 - Possible Most Vexing Parse?

Hello I am trying to recreate a system I made in Python. Here is the error I am getting: error C2228: left of '.onPoison' must have class/struct/union Here...

[3 replies] Last: Thanks guys. Just figured out the problem a little bit before the resp... (by Dish5oap)

by mefelsen

Mirroring 2D array across diagnol

I am trying to mirror an array. This is the array I am given 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 and I need to transform...

[4 replies] Last: ok, so you want to mirror arcoss the top left to bottom right diagonal... (by jonnin)

by adam2016

program running out of memory?(crash)

Hello guys I am making a kind of snake game where you hit a piece of fruit your score gets incremented but I still have to implement the snakes body anyway I h...

[11 replies] Last: I suppose the GNU crowd thought that it would not be politically expe... (by adam2016)

by coloure

Double Variable Evaluating to True

Hi! I am working on the following for an assignment, but I keep returning the same error "Line 33: the address of 'double billingAmount(int, int, int)' will alw...

[3 replies] Last: @Kloppite and @lastchance thank you! I did not realize that the way in... (by coloure)

by stav

Invalid use of incomplete type

Hi I have two calsses: MyObject and MyLogic MyObject inherits from MyLogic but MyLogic needs to have a reference to MyObject. So i forward declared MyObject ...

[2 replies] Last: oh, of course. Yeah i think i will try to rethink my design again T... (by stav)

by marco91

Small library providing getters/setters

Hi guys, I've written a small library, allowing you to simply add getter/setters to existings variables, with minimal change in basecode. https://github.com...

[5 replies] Last: @doug4 I would change std::function<void(T &, T const &)> _setterFunc... (by marco91)

by bradltr95

C++ Classes (issue)

Hey guys so I've been trying to gain some understanding of classes by creating a OOP program in one file that creates a player with custom or prior attributes. ...

[3 replies] Last: If I may give a piece of advice, you may want to look into overloading... (by Lehti)

by jdaniel1975

Brute Force Program Error on for loop

// Can someone run this program on C++ compiler: I'm getting an error on this // for loop on line 101 and I can't figure out why? //Error Message: Brute_For...

[1 reply] : int i,j,r,c; printf("Enter number of rows\n"); scanf("%d",&r); prin... (by jonnin)

by jmoore201897

Can't read all lines of file

I have a program that is supposed to read from a file, parse it, then output the results. I can't get getline to work, and I've tried every variation I can find...

[5 replies] Last: Thanks JLBorges, I was able to fix it after checking the file. (by jmoore201897)

by macXnXcheese117

Scan function

My main is below, I have gotten this far but do not know how to implement funciton scan0. In my directions it says this, "The function scans word starting from ...

[2 replies] Last: Fascinating, The function scans word starting from bit startingBit, t... (by keskiverto)

by EvanH

RK4 for getting the position of a particle, and then animating it

Hi everyone, I'm relatively new to C++ but I know the basics. I want to use C++ to integrate equations of motion using a Runge-Kutta method because I know it...

[1 reply] : I would think that Vulkan or opengl is what you want: https://vulkan-... (by coder777)

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