General C++ Programming - November 2021 (Page 3)

Array output formatting
Hello all, I have stumbled upon another issue with some of my classwork. For this part, we have to display the information from a dynamic array in a neat and...
Nov 17, 2021 at 12:26am
[1 reply] : One way to handle these arrays of pointers, is to only use new where t... (by kbw)
C++ Functions Assistance
Hello All! I am new to C++ and am currently stuck doing this problem. I am having toruble on figuring out how to go about doing the sell games function which ca...
Nov 17, 2021 at 12:23am
[1 reply] : The function isn't the problem, I think the problem is that you haven'... (by kbw)
Switch Statement Void Problem
Hello everyone. Whenever I pick a number in my code and enter the input below, the "cout << Your Personality is ..... " sentence doesn't print. What seems to be...
Nov 16, 2021 at 11:57am
[2 replies] Last: Oh, I see so that's why it doesn't print. Thanks, man. I highly apprec... (by ForgottenLaw)
STL functions which work on vectors
Is there a document or book which has a list of all the stl functions ? I need stl functions 1) I have a vector of an ItemSold object with name and qty(acro...
Nov 16, 2021 at 7:52am
[4 replies] Last: Use of map would be logical, but then you don't need any std algorithm... (by keskiverto)
How to import std.core when building a debug application?
Hi. In VStudio 2022 I get this warning when building a debug build when using: <code> import std.core; <code\> warning C5050: Possible incompatible environmen...
Nov 16, 2021 at 12:02am
[no replies]
by RVan
Returning to 'formal' programming
I need to resume programming and I have decided to do so with C++. I have found some useful online courses but thought a forum could be useful as well. Are ther...
Nov 15, 2021 at 10:05pm
[no replies]
by RZgerr
Struggle with matrices
I am struggling to complete this matrices task. I just need the program to display each matrix and stat if they are equal. I would really appreciate any help of...
Nov 15, 2021 at 5:16pm
[2 replies] Last: In C++ it's preferable to use constexpr instead of #define. Perhaps: ... (by seeplus)
Multithreading and shared memory
Hi, This isn't really a C++ specific question, more low-level programming in general. In class we were tasked with applying a filter to an image in parall...
Nov 15, 2021 at 3:09pm
[3 replies] Last: Thank you very much. This was a far better answer than my professor wo... (by DrZoidberg)
STL Functions vector processing
I want to use an STL function on a vector of strings. The final objective is to get the index of the string which is least letter different from the next. ...
Nov 15, 2021 at 6:52am
[11 replies] Last: When there is a need to use std functions then (using my algorithm) I ... (by coder777)
Need help with this project reading file
/* Name: [Insert Name] Project: GradeReport.cpp Topic: Using files and reading strings and numbers Date: [Insert Date] Description: T...
Nov 15, 2021 at 4:58am
[2 replies] Last: Line ???: Do not loop on (! stream.eof()) or (stream.good()). This doe... (by AbstractionAnon)
Sales and Profit Program
Hello I need help with my c++ program, A well-regarded manufacturer of widgets has been losing 4% of its sales each year. The company’s annual profit is 10% ...
Nov 15, 2021 at 1:40am
[4 replies] Last: Thank you so much sir (by maureen22)
How to use C++ modules with a Makefile?
I have a Makefile which is minimal, yet complete. It is the following: OUT = example INSTALL_DIR = /usr/local/bin OBJECT = ./obj SOURCE = ./src SRC := $(she...
Nov 15, 2021 at 1:31am
[3 replies] Last: Actually, GCC can compile C++ code Maybe, but don't even try it. Two... (by kbw)
Logical Error Help
Hello. I need help with the logical error in finding the GCD of the two numbers that I've committed below. The output should be 0.03 but the output that has bee...
Nov 15, 2021 at 12:43am
[11 replies] Last: Thank you so much for the information guys. Especially for @jonnin, No... (by ForgottenLaw)
by Cplusc
Matrix-Vector Multiplication
Hello, I am trying to do a matrix vector multiplication using MPI. The matrix is a diagonal one, so I store the diagonal elements in a vector. then I distribute...
Nov 14, 2021 at 10:03pm
[6 replies] Last: Yes,it's working now, thank you. (by Cplusc)
integers
how do i implement "int getSum(int A, int B, int C) into this code" #include <iostream> #include <cmath> using namespace std; //int getSum(int A, int B...
Nov 14, 2021 at 6:08pm
[6 replies] Last: @Furry Guy thanks I see it in the examples now (by ocKiNOsIi)
Finding Modulo Problem
Hello guys. I need help in finding the modulo/remainder of the two numbers (which also includes numbers in decimal and negative format). I wonder what's wrong w...
Nov 14, 2021 at 2:10pm
[3 replies] Last: Tnx for the help guys. I appreciate that. I just post this as a refere... (by ForgottenLaw)
How do I read a command and a user specified string together?
My program gives the user a list of options such as "help", "exit", "create file", etc. If the user chooses to create a file, the user will write "create [inser...
Nov 14, 2021 at 6:53am
[2 replies] Last: It's called parsing. std::stringstream is handy for parsing. Somethi... (by AbstractionAnon)
No match for operator erro in C++
Hi While compiling my code it give me error. Please help me .... no match for 'operator>' (operand types are 'std::string {aka std::basic_string<char>}'...
Nov 14, 2021 at 3:57am
[1 reply] : Well, you can't compare an int and a string. 42 is not greater than "a... (by Ganado)
How to sum two arrays into a third array
Hi, im new at c++ and I would like to make two arrays that have 8 values each and each value is generated by ran(). After this I would like to sum each value in...
Nov 14, 2021 at 3:05am
[2 replies] Last: Ok, I have made the program but now my problem is that I dont understa... (by trancamalanga)
Help me in Understanding Recursion 2
Hello everyone, I need help in understanding the recursion on how does it end in 12345678910. When I tried to understand this problem, I expected that the outpu...
Nov 13, 2021 at 4:06pm
[8 replies] Last: yes, recursion gives you a 'free' stack data structure effectively. t... (by jonnin)
November 2021 Pages: 123456
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