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General C++ Programming - March 2014 (Page 30)

std::sort (iterator, iterator, custom) will not compile

I am trying to use std::sort to sort a vector of complex objects using a custom function. However, it keeps erroring "Unresolved overloaded function type". en...

[6 replies] Last: Thank you, fixed. (by dnulho)

by chohmann

Multi-threading

I'm currently trying to log real-time data by using boost::thread and a check box. When I check the box, the logging thread starts. When I uncheck, the logging ...

[1 reply] : m_threadSendData.interrupt(); // interrupt the thread Threads genera... (by Cubbi)

by samprat

to compare data_members of a objects store in std::vector

Overview of problem : I am using std::vector to hold objects of Subject. Now this vector contains lots of objects( with lots I mean 10-20 objects at max) . The...

[1 reply] : #include <iostream> #include <string> #include <vector> #include <alg... (by JLBorges)

by yugank

Using a delay function

I have been working on this project to develop a slot machine game. In that I intended to show rotation of slots slowly so as to show true effect of revolving ...

[1 reply] : http://en.cppreference.com/w/cpp/thread/sleep_for (by MiiNiPaa)

by mjlohr

Problem

What does this program display? I know it has errors in it but I have no idea how to fix them. By the way, I am very new to this. :) Any ideas? #include "st...

[3 replies] Last: #include <iostream> #include <iomanip> using namespace std; int mai... (by kbw)

by quayda

String with Vowel Removal

I'm trying to write a program that uses a loop to remove vowels from words. I'm really bad at this programming thing, so I'm super sorry if my code looks awful....

[3 replies] Last: What is s? Where did you tell compiler anything about it type, size, c... (by MiiNiPaa)

by Noob Programmer

C++ operand programming homework

My question is Write a program that has the user enter two integers and then has the user enter a math operand to do the mathematic operation on the two inpu...

[15 replies] Last: Bonus (without ifs or switch): #include <functional> #include <iostrea... (by MiiNiPaa)

by coddilc

Boost serialization archive versions

Hope everyone is doing well. I'm having an issue with boost serialization. I have serialized a file on my ODroid U2 using Boost v1.53. I'm trying to deserial...

[no replies]

by WiddleSticks

error LNK2019: unresolved external symbol

I know my SDL is set to all the right directories. I don't know what is causing this. I also have all my dll files in the debug folder. It has worked before, I ...

[no replies]

by northfly

Why assign out-of-range value to signed integral type will generate machine depedent results?

Can anyone give me an example of a value about how can it varies dependent on the machine? I just cannot think of any. Thanks.

[2 replies] Last: #include <iostream> #include <limits> int main() { long long v ... (by JLBorges)

by mjlohr

bubble sort

Hi. I need a lot of help with this. I do not understand it at all. Can someone please explain this in simple terms? Thanks, Mary Trace the bubble so...

[1 reply] : Bubble sort is explained here. https://en.wikipedia.org/wiki/Bubble_so... (by kbw)

by praneshiitm

i/o functions and operations

i want to make a quiz for that i have decided that i will store a number of questions in a text file and randomly display them in the output window. for that i...

[no replies]

by Gyiove

Run both in cpu and graphics card.

Hello! Is there possible to control what controls the process? Like somehow switching from graphics card to cpu and vice versa. Basically i changed in my n...

[no replies]

by larjy

Code doesn't do calculation

Overview: I'm creating a code to simulate quantum tunneling current. I'm getting the code to output data on a spreadsheet file, and it all works except the ...

[6 replies] Last: I can't thank you enough! That's fixed it. Brilliant, I really apprec... (by larjy)

by Gyiove

weird double values on cout

Hello! Here is code first: //fp_screen.h class fp_screen{ public: double fps; double xx3; // fp_Screen.cpp fp_screen::init() // called before everything {...

[5 replies] Last: Problem solved i think. // I calculate fps outside here if( xx5 < ... (by Gyiove)

by dotaismaplestory

expression must have a pointer-to-member type

I created a class called Polynomial that asks the user for coefficients and exponent. I also created a function that would add the two polynomials. I'm stuck o...

[4 replies] Last: The first line of code that he posted does that? So does the second... (by cire)

by Ben David

How to stop console from pausing?

Just a quick newbie question: I'm doing a console application and whenever I open a .exe using system(), the console pauses and does not run the next instructio...

[1 reply] : Do not use system(), obviosly. Use WinAPI: http://msdn.microsoft.com/... (by MiiNiPaa)

by Chubby

why doesnt display?

#include <iostream> .... Rectangle r; Point xny; Asking user for info .... // I am trying to display the x and y... but it show x:0 and y:0 //Disp...

[10 replies] Last: I see it because r is one who have value from user and xny come from n... (by Chubby)

by kimi86

Assignment operator for a class with reference

Class A {..........} Class B: {.... private U& u;} I need to write the copy constructor and assignment operator for Class B above Copy would look s...

[3 replies] Last: To quote the C++ FAQ, C++ gives you the choice: use the assignment op... (by Cubbi)

by BRod423

Creating string representation of unsigned char bits

Hello, I need to convert the bit representation of an unsigned char into a string. so like 254 would be "11111111" I'm having some trouble where no matter w...

[4 replies] Last: #include <string> #include <limits> std::string bin2string( unsigned... (by JLBorges)

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