General C++ Programming - C++ Forum - September 2020 (Page 2)

Using Curl in C++ to get http response string after sending http string to server.

In a C ++ program I need to send an http message using Curl to another machine where is running a REST server written in C ++, and then collect the response fro...

[1 reply] : What is your REST server saying while all this is going on? Is it gett... (by salem c)

by closed account 26q2b7Xj

template function that takes Vector T and Vector U and returns the sum of v1[i] * v2[i]

This is an exercise I am working on alone. The idea is too get familiar with auto, decltype, and type traits. Assuming C++20 isn't a thing yet with concepts, so...

[2 replies] Last: Okay I see some parts that need fixing. I must have misunderstood how ... (by closed account 26q2b7Xj)

by closed account oG8qGNh0

Logical Operators + Ifs Small Problems (1,2)

Write your question here. PROBLEM #4 In college, each class typically counts as somewhere between 3 and 5 credits. A student must take at least 12 credi...

[20 replies] Last: So I have officially finalized everything. #include <iostream> #inclu... (by closed account oG8qGNh0)

by closed account Ey80oG1T

Can a const function accept member parameters ad reference?

Can I do this: class foo { public: void bar() { baz(num, 6); } private: void baz(int& val1, int val2) const { val1 = val2; } private: ...

[2 replies] Last: Oh okay, so is it recommended? (by closed account Ey80oG1T)

by Zphip

void function error

So im trying to create a c++ program that executes the sieve of eratosthenes. I keep getting an error that says I have no matching function to call and it says ...

[1 reply] : print_primes(myInt); On this line, you are passing in 1 argument, myI... (by Ganado)

by thanhquan1704

Jacobi Method

#include<iostream> #include<conio.h> using namespace std; int main(void) { float a , b , m , n ; int p = 0, q = 0, i = 0, j = 0; cout << "Enter size...

[15 replies] Last: I solved it. Thank you so much for you help @lastchance (by thanhquan1704)

by rahulvishwakarma

assigning ojne string object to another problem

hi to all, I've centos 7 in VM, and trying to assign one array of strings to another. i did like this :- string choices // some where in file ... // some w...

[2 replies] Last: If you actually don't want a vector (which is certainly preferred) you... (by coder777)

by lesliebellamy

Removing elements from vectors without erasing

I'm writing an inventory program that catalogs items based on quantity, price, ID number, etc. I need to create a function that removes an item from the invento...

[4 replies] Last: Does the order of the stored items have to remain the same? If they do... (by seeplus)

by Mgramlin

How to search a linked list for certain data

For this program I am not allowed to use vectors or std:: I have a function called findStudent that takes a linked list structure as an argument. The function...

[4 replies] Last: @dhayden bool LinkedList<TYPE>::retrieve(TYPE &dataIn) const note th... (by ne555)

by JUANDENT

nested private struct visible from outside??

Hi, I have a nested struct in the private sector of another struct yet is visible from the outside... why? struct Point { private: Point(float ...

[1 reply] : No, I am sorry ... Factory is a static instance of PointFactory define... (by JUANDENT)

by rnima

Display of a singlyLinked list using Queue with rear and front as pointers

So i am having trouble understanding how to display my queue, and if my implementation of queue is correct #ifndef DB_H #define DB_H #include "Node...

[13 replies] Last: Please post node.h. Anywhere that rear can change, there's a good cha... (by dhayden)

by JUANDENT

Having problem understaning a concept in C++ 20

I have this concept: template <class T, class U> using CommonType = std::common_type_t<T, U>; template <class T, class U> concept Common = requires (T t...

[7 replies] Last: thanks! (by JUANDENT)

by arichery2

Problem with finding exact int in array.

I'm trying to do a basic login system. The problem is, the first int in the array works just fine, but when I use any other one, it doesn't work. CODE int ma...

[7 replies] Last: thank you so much it helped in lot in my coding! https://teletype.in/@... (by RachelCulbertson)

by A 7th Coder

How do I specify my OpenGL context to draw to an image array instead of a window

What I would like to know is how I would implement a camera instead of a window for my graphics drawings.

[1 reply] : Your question doesn't really make sense to me if interpreted literally... (by Ganado)

by JPetrucci84

Strange Output

Hey all me again. ' I' setting up a program for three separate functions and I've got them all done until I fix this problem. I'm sure I'll have 10 more err...

[8 replies] Last: Thanks for the help so far. I definitely am only three days into funct... (by JPetrucci84)

by gilbertosbs1

error for program creation for lower value and higher value in c ++

I'm trying to create a program that uses 4 ifs to make the operation with the highest value and the lowest value in C ++, but every time a squeegee condition ap...

[1 reply] : duplicate (by jonnin)

by thanhquan1704

Gaussian with Scaled Partial Pivoting

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[4 replies] Last: [quote=thanhquan1704]I'm gonna write main function later .... then wh... (by lastchance)

by JPetrucci84

Newbie question

Hey all, new member. I'm working on a program to create an average of a set of arrays as well as the Median. I've pretty much gotten the average down, now...

[16 replies] Last: [quote=JPetrucci84]That's all it takes, though, amirite? No. (by lastchance)

by JUANDENT

Lambda returning decltype(auto) vrs auto

Hi, What is the difference between returning decltype(auto), auto and not specifyiung return type at all in a lambda? I have this code: template<typ...

[6 replies] Last: thanks!! (by JUANDENT)

by thanhquan1704

IF Else Statement

#include <iostream> using namespace std; int main() { int a; cout<<"Enter a:"; cin>>a; if(a>10) cout<<a; else cout<<"Wron...

[3 replies] Last: #include <iostream> using namespace std; int main() { int a; c... (by lastchance)

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General C++ Programming - September 2020 (Page 2)