General C++ Programming - C++ Forum

by codecaine1

Repl.it - String Error

Hi guys I use repl.it c++ online IDE to practice my coding. I have some issues. 1) When I inclu...

[3 replies] Last: You'll get substantially better help if you provide a small, reproduc... (by mbozzi)

by aceadams

Basic vector qeustion

What does the mean? vector<int> desks ;

[7 replies] Last: @afatperson, It would probably move the discussion forward in a bette... (by Niccolo)

by litusahoo

FINDING MAX VAL IN A OBJECT

Hi A vector contains a few object, in those objects a certain member type is age which is a numbe...

[2 replies] Last: You know about the algorithm and thus you can read: http://www.cpluspl... (by keskiverto)

by aceadams

Set Insert Iterator?

fin >> k; gr.insert(--k); what does this code mean?

[9 replies] Last: fin >> k; gr.insert( --k ); is same as fin >> k; --k; gr.insert( k ... (by keskiverto)

by aceadams

Not sure why minute detail causes error in code?

#include <fstream> #include <vector> #include <set> #include <queue> using namespace std; vector<se...

[1 reply] : "minute detail" ... not true has only " minute " difference from tr... (by keskiverto)

by bayindirh

Forcing programming structure via virtual functions.

Hello, I'm developing an extensible software framework, and I'm at a loss about implementing some...

[14 replies] Last: Please don't take my following point as a raw "I told you so", I don'... (by bayindirh)

by Aaron Vienneau

#Define for building functions alternative

Hi, So, I'm working with a piece of code that is not mine, but uses #define SPELL(func) i32b ...

[12 replies] Last: it may also be possible to use the existing code to just generate what... (by jonnin)

by rekhapankajam

Migration of a C++ application to a newer server with latest Redhatlinux version

Hi, I need to move an application on a redhatlinux to another server having latest redhatlinux vers...

[2 replies] Last: My suggestion is to just sandbox it. make a new machine with the new ... (by jonnin)

by litusahoo

Getting objects through iterators and putting in a Map

Hi I have objects of classes in a vector. While iterating through the vector i want to insert eac...

[10 replies] Last: or provide some comparisonn function just as with std::unordered_map y... (by ne555)

by codecaine1

Pass By Reference - Question

I know the code below will print “123456”. But I am curious on something. In the ref functio...

[5 replies] Last: If you're asking about when a parameter should be a pointer and when s... (by dhayden)

by calvinfornia

Topological sorting question

Hi, everyone. I'm now working on a topological sorting program, which reads in a data.txt and output...

[6 replies] Last: std::array needs the size to be known at compile time, not applicable ... (by ne555)

by calvinfornia

Input file question

Hi, everyone! I'm working on a topological sort problem. I have to read in a text file which contain...

[2 replies] Last: Thanks a lot, that works :)! (by calvinfornia)

by Mungo1981

Little Problem to connect Compile Instruction

Dear Community, I have a little Problem to connect Compiler Instructions for g++ on Linux Ubuntu Mi...

[1 reply] : Did you look at the output after you ran the command? What did it say?... (by Albatross)

by ndcn541

putting an object as condition in while statement (1,2)

I am trying to understand how filestream objects work. What does the file passed as a condition in t...

[29 replies] Last: I suppose my final reply to wrap things up. Eh, I wouldn't rely on a... (by zapshe)

by ndcn541

how does the sort from algorithm work?

I understand that it sorts a vector in ascending order and you can write your own comparator method ...

[10 replies] Last: Heh, welcome to the old geezers club. :O) I enjoyed playing with sort... (by Duthomhas)

by dharam singh

C native android app crashes on Oreo and above due to signal(SIGALARM) call

I have created a C library using Android NDK and created an apk using this prebuild library. This a...

[2 replies] Last: why stack only? Heap, used as shown above in the static example, is j... (by jonnin)

by calvinfornia

Topological sort question

Hi, everyone. Here is an introduction of topological sort program, There's an input file indicating...

[6 replies] Last: 4 < 3 < 1; 2 < 5 alll constraints are respected OK. I think I get ... (by doug4)

by P13r0

Help on a (probably) "custom" CRC

Hi all, and thank you in advance for your help. Here's my issue. I was recently given a small route...

[8 replies] Last: Ok, a good friend of mine did it :) int main(int ac, char** av) { ... (by P13r0)

by ddonate

Get Outlook contacts from C++ application

Hi, I need a C++ application to get Outlook contacts (from my local Outlook application) I f...

[7 replies] Last: Just if usefull for anyone, I found how to compile the code here: htt... (by ddonate)

by TraBinary

Save hex address of a int32 (savepos)

how can i save hex address? for example, i have a int32 int32 UncompressedSize ; how can i sav...

[8 replies] Last: Oh! Are you reading into UncompressedSize from a binary file? http://... (by Albatross)

General C++ Programming - August 2019 (Page 2)

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