General C++ Programming - C++ Forum

using namespace std; template<class T> void Bubblesort() { T *unsorted, swap; unsorted = new T ; srand(time(NULL)); cout << "1" << endl; for (int ...

[4 replies] Last: Does that help you? :) (by Naughty Albatross)

by gedamial

Keep struct variables private outside, but public inside class

Hello. My class looks something like this: template<typename T> struct Node { T value; Node* left{ nullptr }; Node* right{ nullptr }; }; template<typena...

[3 replies] Last: You could return a bool. int main() { GTree<int> my{ 10 }; my.... (by Thomas1965)

by omer123

How static linking is done with qt creator?

Hi I have created a simple program using Qt creator. I know how to dynamically link it, but don't know, how to compile it statically. My Qt version is 5.7.0. ...

[6 replies] Last: After many tries, I could fix it. Thanks so much cplusplus forum. (by omer123)

by prince98

C++ inheritance

Can someone please explain how to do this? Write a program to calculate bill amount upon given constraints 1 use constructor for variable initialization. 2 M...

[2 replies] Last: Hi, Well, best place is at the point where you realise this isn't a ho... (by Naughty Albatross)

by luckytiger

Vector arrays

I made some code using vector arrays. However i have some errors in my code. Here it is: int _tmain(int argc, _TCHAR* argv ) { const int people = 10; ...

[8 replies] Last: There are a couple of ways you could do it easily. You could create a ... (by MrHutch)

by VanessaSaroop

multidimensional arrays/2d arrays

HEY my name is Vanessa and i need help big time on an assignment to add to my gpa. The question is as follows. I have no idea what to do. PLEASE HELP!!??? (Oh a...

[5 replies] Last: FILE * a = fopen ("input.txt", "w"); You need to open the file for r... (by Thomas1965)

by TheCodingOne

Having Trouble with getline() w/ Linked List

Hi Everyone, I'm having a bit of trouble understanding what is happening with my program when i'm running it. problem: When it runs it asks for each entry o...

[2 replies] Last: That Thomas1965, I'll try that an see how it turns out. (by TheCodingOne)

by umka6970

Electrodynamics & Grapics

Hello! Can someone adwice a library for electromagnetic field simulation in C++? I have E and H fields for every moment and in every piont and I need a way to ...

[3 replies] Last: Also I will be pleased if you will share knowledge about the simulatio... (by umka6970)

by curiousengineer

How can one constructor call another in C++?

I know this is not possible in earlier versions of C++. However, I don't know if it is supported now. I have the following constructors: int_vector::int_v...

[11 replies] Last: The term auto-magic is Stroustrup's, not mine. No worries :+) I wa... (by TheIdeasMan)

by Wu zhen hai

atomic operator=

when 'return a value' and other threads store the atomic, a race condition will happen?

[4 replies] Last: To see the 'current' value of an atomic object (instead of a snapshot ... (by JLBorges)

by Wu zhen hai

atomic : is_lock_free

//I can not get the significance of 'is_lock_free' #define _ENABLE_ATOMIC_ALIGNMENT_FIX #include <atomic> #include <iostream> #include <string> #includ...

[7 replies] Last: Thanks. It is so complex! (by Wu zhen hai)

by Mwangi Elijah

How to resolve these compiler errors

There are these four functions i have called consecutively from main but the compiler shows the below errors, what do they mean ? Error 1 error LNK2019: unr...

[18 replies] Last: It would be rude of me sleeping without saying thank you to all progra... (by Mwangi Elijah)

by QuestionMaker2

Alternatives to Std::tuple for returning more than one value from a function

Hello, I would like to know if there is an alternative to std::tuple and passing by reference for returning more than one value from a function. One value w...

[7 replies] Last: It's a very sad truth that error checking is largely ignored in comput... (by dhayden)

by closed account 21vXjE8b

Ignoring the Space

Yeah, I'm back with another question. My code works like this: You write a message (heLLo), choose a key value (e.g. 3) and the result is khOOr (3 letters forwa...

[12 replies] Last: Glad it helped :) (by Naughty Albatross)

by hm2251

3 attempts for access code. sequential search

Hello everyone it's nice to meet you all this is my first time posting on here. I'm having a little trouble with developing a c++ code. Basically I have to mak...

[7 replies] Last: Thank you soooo much for the help. the program works fine. (by hm2251)

by USTHBSTAR

what does those 2 founctions mean ?

void test (void) { #if WMOPS multiCounter .Test++; #endif } void move32 (void) { #if WMOPS multiCounter .DataMove32++; #endif }...

[6 replies] Last: You're welcome. (by MikeyBoy)

by closed account 21vXjE8b

Letter to number and number to letter

Maybe this is a homework question, but I can't find a way of solving it... In my code, you put a message to be codified (hello), put a key value (e.g. 3) and th...

[7 replies] Last: Got it!!! Thank you! (by closed account 21vXjE8b)

by embeddedintern

Switch statement in C question

if a switch case is given as mask=0x01 switch (Buffer & mask) { case 1: --- if else case 2: ------ if else default: } I am doing unit t...

[3 replies] Last: Does it help you? :) (by Naughty Albatross)

by closed account 21vXjE8b

The code skips getline() !!!

Hey guys! I don't know if here is the right place for my question. Sorry if it isn't! Yesterday I started working in an encrypting machine. It worked fine, BUT...

[4 replies] Last: Thank you Chervil! It worked! (by closed account 21vXjE8b)

by Brackets

is Array == Array condition allowed?

Can I treat, say char like a std::string? For example, can I do this: char text = "sometext" if (text != "someothertext") text = "someothertext"; Or do I h...

[12 replies] Last: Yep, well done glad to help. ;) (by closed account 48T7M4Gy)

C++

Forum

General C++ Programming - July 2016 (Page 7)