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General C++ Programming - May 2018 (Page 9)

Why is the program giving me odd characters after Chinese characters?

Here's the problem, the program is used to reverse text while I am learning C++, and that is an exercise. It worked nicely through English characters. Then I st...

[7 replies] Last: Do the non-reversed Chinese characters appear correctly? (by Peter87)

by sonkun

Reducing the complexity of an algorithm

Greetings everyone. I have this algortihm: int x ,n,j,k,i; int maxi=0; for (i=1; i<n; i++) for (j=i+1; j<=n; j++) { bool ok=true; for (k=i+1; k<...

[3 replies] Last: There is a much better algorithm, N log N : https://www.geeksforgeeks.... (by tpb)

by agelakute

Sets and Maps, function wont compile.

Hello, I have to write code to create this function. /* set<Book> publishedBefore(int year); returns a set of Books that were published before a given year. ...

[2 replies] Last: Thank you Repeater, I was able to complete my assignment. Cheers (by agelakute)

by adam2016

dissecting a hamster(yes a coding question)

sorry I just tried to throw a little humour in the title, anyway I would love if someone could help dissect the hamster program used mainly on Kali linux, ...

[1 reply] : he tests for if (m_string) but m_string is not a boolean variable so ... (by tpb)

by stav

Changing project structures and incldues problem?

This isn't actually a problem im having it is just something i've been wondering about for a while. say i have a big project with a lot of headers and source f...

[1 reply] : As long as a) there are no duplicate files in the project, and b) you ... (by helios)

by rajekdelta

vector subscript out of range

My code is building but every time I try to run it I get an error message telling me that the debug assertion has failed on line 1795 and the expression is: vec...

[6 replies] Last: That was the problem. Thank you! (by rajekdelta)

by MBANS7A1

C++ code access violation writing location during debugging

Hello fellow C/C++ programmers I have some code that I am currently debugging on VS2015 windows 8. When the arrow of the local windows debugger gets to the l...

[1 reply] : Your code seems to have the very same problem as this program: /* ... (by keskiverto)

by d1g1talarts

Binary Search

I am attempting to implement this binary search but it returns 11 and says 12 cannot be found. int binSearch(const vector<int>& sorted, const int target) {...

[4 replies] Last: I am an idiot. i need to be checking the location. not the value. Than... (by d1g1talarts)

by coloure

Expected Primary Expression Error | Assignment of Double Function

I am working on this problem for a class, and I am running into a lot of errors. I spent a good deal of time trying to troubleshoot/de-bug my code, but have bee...

[3 replies] Last: Thank you guys so much! I also had a different error in my original co... (by coloure)

by Mathes

SFINEA and implicit type conversion

Hi, lately I started to dig deeper into templates and SFINEA. In my project I was able to use SFINEA to do basically what I want. But there is one except...

[2 replies] Last: Hi Peter, you are absolutely right, it should be declval<T> instead... (by Mathes)

by ED201

can somebody help with programing arduino due

I have this code which samples analog input 1Msps and I want to put the data into declared array instead of sending to serial port int myArray ; here is t...

[2 replies] Last: this is what I though I would do something like writing to array I ca... (by ED201)

by rajekdelta

Help me, I'm not good at this stuff

Help, I'm fairly new to C++ and really having trouble understanding the whole thing. For this program I'm supposed to design and implement a C++ class to store ...

[6 replies] Last: You're welcome - hope it helped! (by MikeyBoy)

by sfxhewitt

Manual bomb placement in minesweeper

Hi guys, I'm doing a bit of learning and I have been trying to figure out how to set bomb placements manually for test purposes, could someone please assist? th...

[2 replies] Last: Sorry, I'm quite the noob, could you put that into my code? I can't ev... (by sfxhewitt)

by d1g1talarts

Merge sort with Vectors

I am trying to implement a merge sort and the end result that i am getting is not quite sorted correctly. Anyone able to explain to me why? vector<int> mer...

[8 replies] Last: output spits out 1 7 12 15 13 9 11 10 5 8 14 6 3 4 2 You did not sh... (by keskiverto)

by alex067

Help with this game!

Hey everyone. I am re-writing the Oh n0 game, developed by Martin Kool in C++. If you are unfamiliar with how the game works, check it out: http://0hn0.com/ ...

[17 replies] Last: Hello, @alex067. The line counts the number of adjacent cells (e.g. ... (by lastchance)

by hassanAman

Splitting Strings into String arrays

How can we spit strings into arrays / vectors in c++ without any external libraries, such as boosts? string temp = “Well//Hello//There//Everyone”; stri...

[3 replies] Last: Yes, it could be written with getline like this: vector<string> spli... (by tpb)

by emmajohn847

Guidance needed urgently...!

Please help me to get the following output in C++ *********** * * * * * * * * * *********** I have drawn the outer box b...

[no replies]

by Luthor

help: list<struct> of list<string>

Trying to create a list that contains multiple keys with multiple content for each key. Do not want to use multimap because it would double the size of the file...

[9 replies] Last: Since memory is an issue, consider using forward_list instead of list.... (by dhayden)

by warchief

why reinterpret_cast works while memcpy() not

I have a char array char* array which contains 3 float variables (in binary) and I want to extract it into a struct: struct float3 { float data1; flo...

[3 replies] Last: Sorry, I added wrong topic name, the correct is: why memcpy() works wh... (by warchief)

by ahaana

getting error: invalid conversion from 'TTcell (*)[30][30]' to 'int' [-fpermissive] int insertdata (cl)

#include <iostream> #include<string> using namespace std; struct TTcell { string days = { "Mon", "Tue", "Wed", "Thur", "Fri" }; string Subject ;...

[4 replies] Last: Lets have a function declaration: int foo( bar ); What is the 'foo'?... (by keskiverto)

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