Beginners - C++ Forum - June 2022 (Page 3)

by JamieAl

Eliminating use of for loop with Eigen

I am trying to build a row vector and column vector using Eigen library to multiply them together to...

[1 reply] : See: https://eigen.tuxfamily.org/dox-devel/group__TutorialSTL.html (by JLBorges)

by JamieAl

Extract rows/columns of matrices in C++ vs MATLAV

In MATLAB you can extract the first and last rows of a matrix by A(1,:); A(N,:); Is the...

[18 replies] Last: Thanks everyone for the incredible feedback/info! I am working with Ei... (by JamieAl)

by mickydint

iterator problem

I am copying an example from a book and it wont compile. I am trying to copy a vector<string> to a ...

[4 replies] Last: Just been looking at it and I noticed the return type. Thanx for look... (by mickydint)

by sarvcr

Linked List with templates

Question Solved. Look at SeePlus comment if you have a problem like this. Hi! Long story short, ...

[9 replies] Last: It's working perfectly now. I really appreciate all the help you've gi... (by sarvcr)

by Al Green

char*/string function type

Hi folks! I'm trying to write DLL with a function that accepts a string, manipulates it and retur...

[4 replies] Last: @thmm Thank you, I used your code and it works now! You are awesome! ... (by Al Green)

by ElusiveTau

What's the difference between overloading operator<(Class& a) and operator<(Class& a, Class& b)?

What is the difference between overloading operator<(Class& a) and operator<(Class& a, Class& b) ...

[8 replies] Last: How many calls are used when it's sorted Apparently still just 1. M... (by Peter87)

by satsat111

A calculator question

Hello I'm trying to implement a simple calculator supporting variables. And my question is the LVal...

[10 replies] Last: istringstream gives a stream from a string. This can be used as a stre... (by seeplus)

by MHS1986

Undefined reference?

Hi, i am new to C++ and while practicing i am getting an undefined reference error from the compiler...

[4 replies] Last: Part of the problem is that you have global: const int NUMBER_OF_ROWS... (by keskiverto)

by Pen72

Graph problem

I'd like to know what condition have I not considered in the code, this should be a DAG problem righ...

[6 replies] Last: Hello, yes I think it should be m, must be typo mistake. Thank you for... (by Pen72)

by SITHESH

Adding a blocker in a board to restrict cell access.

I have game of Abalone that I have created I am looking for ideas to insert a blocker on the board. ...

[5 replies] Last: Thank you, @jonnin, for the feedback on this and to @George P for the ... (by SITHESH)

by Pen72

Find words

I don't know where my code went wrong, I got two correct answers and 8 wrong answers, thanks in adva...

[4 replies] Last: #include <iostream> #include <string> #include <map> #include <set> ... (by seeplus)

by Pen72

inorder traversal

Hi I'm trying to implement inorder traversal in BST. The issue I got here is, if the data is alread...

[3 replies] Last: Your question asks about Inorder traversal but your post alludes to tr... (by ElusiveTau)

by rozick1

map with iterator as key?

Hi I'd like to have a map where the key type is an iterator. This will not work out of the box beca...

[4 replies] Last: > Does anyone know a way of defining a less than operator to an iterat... (by JLBorges)

by Geckoo

Format integer as a string

Hello. Is there a way to format an integer according its memory size using to_string ? I explain m...

[7 replies] Last: Now the message is simply concatenated this way : snprintf(message, ... (by Geckoo)

by sandbox007

No idea whats wrong

Hi, I have two weird questions, not sure if its something wrong with my code... 1) Why is my outp...

[7 replies] Last: However, for a computing system, if you divide an integer by an inte... (by Geckoo)

by yonagy82

Failure of parameters transfer

Hello, I'm trying to build an ESP32-TMC2209 application. The setup of the TMC2209 includes invocati...

[6 replies] Last: Unfortunately it didn't help. (by yonagy82)

by Geckoo

Color spectrum

Hello everyone. I hope that all is fine for you. I am still playing with pixels. Now I am searching ...

[3 replies] Last: Done. Thank you ++ https://ibb.co/VDt23qs (by Geckoo)

by Ch1156

What is this code doing?

So i'm following this book called SFML Game Development By Example and I've run into some code I'm n...

[1 reply] : Hello. This code is a good exercise to understand "complex" logical co... (by Geckoo)

by PhysicsIsFun

decrement size_t in loop (1,2)

Hi everyone, I was recommended to turn on compiler warnings for debugging purposes. The compiler fr...

[25 replies] Last: > That approach works fine with VS release... >> Compile without it a... (by JLBorges)

by hakanxdurak

Process exited with value 3221225477

Hello friends, I am currently working on a homework. But the code i wrote is not works as expected ...

[6 replies] Last: Thank you all. That helps a lot. (by hakanxdurak)

Beginners - June 2022 (Page 3)

C++

Forum