General C++ Programming - C++ Forum

by adam2016

Move constructors not getting called

ey guys,to my surprise it seems like the move constructors are not being called when I set an object = to an rvalue object, this took me by surprise,the object...

[5 replies] Last: My 2 cents worth :+) string* name; // ... name = new string(nme); ... (by TheIdeasMan)

by Nikoleschi

Need help !

Hello ! Im a not so good with files, especially with Direct Access Files. So i need your help. I want sort structure in alphabetical order using Selection Sort...

[11 replies] Last: This is where a vector would come in handy. I dont know how to use ... (by Nikoleschi)

by WildB

Need help with inheritance

This is the Assignment: Given the following declaration for a TestScore class, write a derived class declaration called IDScore that adds an integer student ID...

[no replies]

by HybridXephius

Issue with program.

*topic solved.

[3 replies] Last: Don't delete your post after being helped. Leave it as a reference for... (by Ganado)

by andriasss

Class and Objects//Files And Fstream

Anyone knows how to make funcqtion, wich reads from file any line as a string, than it splits up this string, and with Set() function we put it in class

[7 replies] Last: @andriass Ugh, where to begin... your code actually isn't even legal C... (by Ganado)

by alex067

What is faster?

Lets say I have 2 separate functions which do the same thing: simply initialize a 2d array. Function 1 does it with a straight forward nested for loop. IE ...

[3 replies] Last: Function 2 won't work. (by lastchance)

by ahaana

plz help the inserted data doesnt display

#include <iostream> #include<string> using namespace std; struct Winter { string subject ; }; struct Summer { string subject ; Winter win; ...

[1 reply] : Isn't this just a duplicate of http://www.cplusplus.com/forum/general/... (by MikeyBoy)

by MBANS7A1

C++: exception thrown during debugging of code on VS2015

Hello fellow C++ coders, I have some code that builds but during debugging with local windows debugger (going down line by line) I get this error that aborts th...

[4 replies] Last: how does that help solve the problem It tells you that an index of 2... (by MikeyBoy)

by Flaze07

failed to run html help compiler on index.hhp

https://imgur.com/l4PRnwG

[no replies]

by bhardy7

stock algorithm: double top

i am currently working on an algorithm for my final project, part of it includes finding if the vector of objects that was imputed from a stock csv file. I was ...

[2 replies] Last: It is not quite clear what you are doing / should do. Does the order ... (by keskiverto)

by adam2016

Move semantics

Hi guys there seems to be a debate on stackoberflow on why you should leave a rvalues data members in a certain state even thought you will never use it again ...

[2 replies] Last: good point because they will both point to the same data thanks :) (by adam2016)

by ahaana

after inserting the data is not being displayed

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

[no replies]

by ahaana

getting error could not convert '5074798' from 'int' to 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}'|

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

[3 replies] Last: I think the array size needs to be explicitly specified for members of... (by Peter87)

by rororoxor

Help in Doing Certain Tasks

How can I make this so that the enemies disappear when we attack? In addition, the main character seems to be insta-dying :\ #include <iostream> #include <std...

[no replies]

by rororoxor

‘{‘ missing function header

I get this error on line 22. What do I do? #include<iostream> #include <windows.h> using namespace std; int Map = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...

[3 replies] Last: got it, ty (by rororoxor)

by MBANS7A1

C++ error:String input wrongly goes into if conditional statement even when string input is correct

Hello everyone,I have a simple function in C++ where I ask the user to select if they female or male by typing in the appropriate string ("FEMALE" or "MALE") in...

[2 replies] Last: @tpb-thanks for the helpful reply. I will try it out. (by MBANS7A1)

by closed account o1pz6Up4

'writeColor': is not a member of 'Circle'

I'm getting the following error: 'writeColor': is not a member of 'Circle' From the following code (pdf's on google drive): Header code: https://drive.google...

[1 reply] : You really should post the code here. Make sure you put it in code tag... (by tpb)

by Heymid

Choosing regular arithmetic operation as function of boolean

Is it possible to make something like this: #include <iostream> using namespace std; int main(void) { int (*z ) (int) = {&(operator-), &(operat...

[3 replies] Last: Well, you should still put the <functional> in there for portability. ... (by Ganado)

by closed account o1pz6Up4

enumerator inside class type

I'm having a problem with a function telling me that my enumerator type Color is undefined, even though I have it defined inside the public section of a class. ...

[2 replies] Last: That was it. Thank you very much! (by closed account o1pz6Up4)

by bernt0cpp

Cannot convert negative values - threaded

Hi all, I am working on a threaded code for numerical computations. I am getting from time to time the message "Cannot convert negative values" and my progr...

[2 replies] Last: Thanks Peter. I had not heard of "data race" before. I'll look into i... (by bernt0cpp)

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General C++ Programming - April 2018