General C++ Programming - C++ Forum - September 2012 (Page 19)

Hi there, I'm currently writing a program that calculates the energy of atoms inside a simulation space (I'll spare the other details). Basically I want to crea...

[3 replies] Last: 2 options: 1 - You can open and close file 1 and then open and close... (by soranz)

by sdj

Pointers in cpp

I saw a pointer which was declared as *& in a program... what does *& represent?

[3 replies] Last: @ pogrady : You cannot dereference a reference. As Caligulaminus sa... (by closed account zb0S216C)

by t2nator

Sorting 2D Vector

I am trying to use the std::sort included in algorithm library but keep getting errors... WBMovies.h #ifndef WBMOVIES_H #define WBMOVIES_H #include <iostream...

[7 replies] Last: Well if you have several members of type std::vector<T> in your class ... (by vlad from moscow)

by x Goliath x

Can't get a math equation to work. Help :)

#include <iostream> #include <stdlib.h> using namespace std; int main () { int midterm; int final; int researchPaper; int groupProject; int pa...

[5 replies] Last: Found it. I had researchPaper2 = researchPaper/250 rather than 150. (by x Goliath x)

by jorgen

Binary files

Hello! I'm trying to learn how to use binary files instead of text files (supposedly they will take up less space?) and I have the following small test program:...

[10 replies] Last: That worked, thanks a lot! (by jorgen)

by TheIdeasMan

Pure Virtual Functions

Hello all, Say I have an inheritance tree, and I want to not be able to create objects of the class which is near the top of the tree. I could have a pure vi...

[6 replies] Last: OK thanks Vlad & Doug4 - it works like a charm. I used the protected c... (by TheIdeasMan)

by jorgen

Function pointer and ofstream

Hello! I'm trying to create a function pointer to a member of std::ofstream and get an error. Here's the code: int main() { ofstream bout; bout.open("...

[3 replies] Last: Haha! Thanks guys (by jorgen)

by vin chalapathi

basic c++ program

hi, can anyone explain the o/p of this program. #include<iostream> using namespace std; int main() { int a=10; cout<<a<<" "<<a--<<" "<<--a; return ...

[8 replies] Last: The link that @tolga gerekci provided sums it up pretty well. As far ... (by doug4)

by jumper007

Having an issue with <fstream>

This is the code. The compiler (Visual C++ 2010 Express) does not recognize the ifstream and ofstream even though the <fstream> header file is included. I hav...

[4 replies] Last: Another way is to write std:: in front of all the names from the stand... (by Peter87)

by Eyad

2D array

How can I output 2D array (8*8) but in order? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 45 46 47 48 49 50...

[5 replies] Last: If I have understood what you want then you can use the following code... (by vlad from moscow)

by ayanda83

HOW DOES ONE PASS AN ENUM TYPE AS A PARAMETER FOR A CONSTRUCTOR

Hi everyone, My class below contains two enum types. My problem is passing an enum parameter to the constructor. I'm not really sure how to do that. #ifnde...

[1 reply] : Entertainment movie_1("89564", "Apocalypto", "Mel Gibson", 2, date, E... (by firedraco)

by CMarco

size vector in c

Hello, I'm trying to create in C something like this: struct ne{ uint64_t shw; uint16_t th; }; struct ne *ret ; It gives error sa...

[8 replies] Last: ^ man malloc (by ne555)

by DexterMorgan

Should I get Stroustrups book on Programming: Principles and Practice Using C++?

I can get it at close to 50% off (for $42) :D I am already getting C++ Primer 5th ed by Lippman for C++11, and the 2nd ed of C++ standard library by Josuttis (...

[5 replies] Last: +1 JLBorges. (by Catfish2)

by rozick1

Moving from SDL to qt for graphics

I'm fairly used to the paradigm in SDL of changing the location of an object and then redrawing everything. Is this the same in Qt? At the moment I have a...

[2 replies] Last: Thanks for sharing knowledge. http://www.editableclips.com/ (by editableclips)

by mika23

Stack compiles but postfix output wrong

Hi guys so my stack program I am supposed to enter a postfix empression like 37+. It only outputs the first number 3. Another example 542+* it will only output ...

[1 reply] : You need to post some code, otherwise we can't help (by coder777)

by amitabharya23

Best socket lib in c++

Hi, Can some one suggest the best framework or toolkit/sdk/lib for sockets in c++. I need to use it to build a server, initially the server is for Linux/u...

[3 replies] Last: These are the options that come to mind immediately: Boost Asio - pro... (by JLBorges)

by tannerwilson

SFML Window Problem

So, I'm learning SFML (done with SDL, just not for me) and I've run into a very minor problem. So, if I have a function called init() that handles creating t...

[2 replies] Last: Sorry, I rushed and didn't write all the details in :X You are correc... (by tannerwilson)

by vw4x4

please explain

can anyone explain me the advantage of type casting over type conversion?

[1 reply] : type casting is type conversion. (by Disch)

by AlitCandle

Does anyone know of a free library that allows you to play audio files

I would want to add sound to the program like in the video. http://www.youtube.com/watch?v=2-am2t8-HCk

[4 replies] Last: OpenAL (open audio library) ? (by closed account o1vk4iN6)

by brandonator

Fixing the bugs in the program that happened when creating the functions.

Can you help me fix the code. #include <iostream> //NAMESPACE using namespace std; //MY VARIABLES long a = 0; long b = 1;//never changes ...

[3 replies] Last: <brandonator> you cannot have a variable and a function named the same... (by CLman94)

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General C++ Programming - September 2012 (Page 19)