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Beginners - July 2017 (Page 11)

Need help with a grade processor assignment using arrays.. (1,2,3,4)

So my teacher is giving us a week to do this and I dont really have time to read all the material in the text. Ive been skimming it. I need help as I'm not sure...

[78 replies] Last: Time to show us all your code. I'm surprised int scores {0} worked th... (by closed account 48T7M4Gy)

by stav

problems with __declspec(dllexport)

I'm trying to make a game engine library but i'm having some trouble with setting up the project, properly. i have an include folder where i keep the library h...

[6 replies] Last: that's 4 times the same reply (by goldenchicken)

by masterinex

how to push filestream into a char pointer

as practice , my goal is to read from a file called test.txt and display the length of each word using the a count function. for some reason i keep gett...

[4 replies] Last: Here is it in gool old plain C99 /* Simple prog to read words from a... (by Thomas1965)

by r 4 raja

Can any one solve this qns.

How to convert the following fractional decimal number to binary by using sum of power of 2 method? 1/2= 1/4= 1/8=

[5 replies] Last: Mr. Jonnin Thanks for your response. 1/2= 1* 2 power -1 = 0.1 how ... (by r 4 raja)

by Thomas1965

It is possible to craft Mobile app in C plus plus programming Language.

If you use Windows you can do it in Visual Studio. https://blogs.msdn.microsoft.com/vcblog/2017/04/18/android-and-ios-development-with-c-in-visual-studio/

[no replies]

by ahswong

can't understand why cout << someInt << endl; returns 65

I ran the code below on my terminal and it returned A 65. I understand why it returned A but I am absolutely clueless as to where 65 comes from. I went through ...

[2 replies] Last: Just a quick note, please make your title give a clear description of ... (by goldenchicken)

by mrsh

least aquare method

hi,i would like to ask on how to fit curve with equation y=-ax-bx^2 using least square method.

[2 replies] Last: Set: squared error, S = Σ(y+ax+bx 2 ) 2 Set the partial derivatives... (by lastchance)

by MoreUmph

Storing strings/integers to be used in a different class from seperate file.

Hello forum hope you're all having a sweet day, Im new to C++ and am trying to make a text based game in the console (I know the argument already, I know what I...

[7 replies] Last: Okay so I've done some work, having a hard time understanding but gett... (by MoreUmph)

by bluefrog

packaged function object runtime exception

I am trying to test a packaged task, using std::packaged_task. I am unsure why this code generates a runtime error though. Can anybody point me to working...

[5 replies] Last: thanks, I was linking as follows: g++ -g -Wall -o "%e" "%f" -L /usr/... (by bluefrog)

by ahswong

not sure why the cout returns 65.

Can someone please explain to me why cout << someChar << " " << someInt << endl; returns A 65? I understand why it returns A but not sure why 65 as s...

[2 replies] Last: got it! thanks for explanation! (by ahswong)

by Happilicious

Ofstream problems

Good day everyone, I have a problem in my program, when i use ofstream called write, main.exe starts to not respond, and crashes. If i copy ofstream part to a n...

[8 replies] Last: Hello Misenna, I think i didn't explain my question clearly, sorry. M... (by Happilicious)

by sapi3ntia

Need help with my mock exam

We are given a main and we have to code the classes without additional includes and so on (of course without changing the main). When i run the programm i get ...

[8 replies] Last: > I would be nice if the order can be solved, but it is possible that... (by sapi3ntia)

by Stauricus

change all objects that contain a certain value

hello everybody in the following code, i want to change all elements of "a" that contains any element from "i" to 0. #include <vector> #include <algorit...

[7 replies] Last: Here is a third version: #include <iostream> #include <vector> #incl... (by JLBorges)

by King Of CPP

#pragma & #pragma once usage

Hi , I don't have any Ideas about what these preprocessors will do. Can anyone please explain ? Thanks.

[3 replies] Last: Hello King Of CPP, You may find this line useful. I use it quite ofte... (by Handy Andy)

by austin004

Please tell what will be displayed

class Node{ public: int data; Node * next }; Node *p1 = new Node, *p2 = new Node, *p3 = new Node; p1->data = 12; p2->data = 34; p1->next = p2; p2->next =...

[1 reply] : Please do not double-post. Other thread: http://www.cplusplus.com/foru... (by keskiverto)

by Stauricus

remove common elements from two vectors

hello i made a code to remove all common elements in two vectors of objects. firt i'd like to know if is there any more elegant way to do it, and if i made so...

[6 replies] Last: oh, i got it. thanks for the answer :) (by Stauricus)

by H00G0

'stoi()' was not declared in this scope.

Hello! I'm currently having an issue trying to compile a simple code in dev-C++. I'm working with strings ( #include <string> ) and want to convert a stri...

[14 replies] Last: Thanks gunnerfunner. (by Thomas1965)

by zxcvbn

Questions about the serial programming of 28335

Hello~all,thank you for spending time in reading my thread.I have some troubles.The following states: 1).I bought a development board from internet and the ser...

[no replies]

by seungyeon

dynamic allocation problem

Write your question here. #include <iostream> #include <cmath> using namespace std; struct points { double x1; double x2; double y1; doubl...

[2 replies] Last: delete structObj; with std::unique_ptr<> or std::shared_ptr<> such ... (by gunnerfunner)

by bluefrog

shared future with single promise

I am trying to understand the code below, which has three future threads running, but only a single promise, which passes the argument 4. So the question is,...

[3 replies] Last: thanks. the discussion by Howward on the link you provided makes sens... (by bluefrog)

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