49,757 Topics
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| | Hi Iam using visual Studio 2008 professional edition in which iam working with visual c++ projects. I want to generate class diagram for the project. Class diagrams are working fine with c# and VB projects but its not working for c++ projects. I created fresh projects and tried to generate …  |
| | I need help creating my operator+ function.The first thing i did was send the binary numbers to the reverselist funtion, but i ended up getting some errors. Binary.cpp: In function `binary operator+(const binary&, const binary&)': Binary.cpp:164: error: invalid initialization of reference of type 'nodeType*&' from expression of type 'nodeType* const' …  |
 | is there any way one could do a square root program without sqrt or pwr functions? Any tips? I am not asking for code btw.:)  |
| | I know that there are plenty of open source implemenations of AVL trees out there but I was wondering if it is possible to have a AVL that has repeat entries. I want to use one so I can search records by various fields. Eg I would have one for … |
| | I have a vector<purchases> v where purchases is defined as: struct purchases { string name; int amount; string item; }; vector<purchases> v; I need to find the 3 top buyers. ie. the name of the top 3 people with the highest accumulated amount. The problem I have is when I … |
| | Hello, I am working on an arbitrary precision arithmetic library. I already created a version that just stored numbers as "before decimal point [unsigned array]" and "after decimal point [unsigned array]". The issue is that it is both inefficient and incomplete. I would like to incorporate complex numbers into the …  |
 | Hi, I am implementing an applicaiton which uses CPU but having a problem about allocating in GPU memory. Above all, my work environment is Windows 7 Visual Studio 2010 NVIDIA Quadro NVS 290 (256MB) When I run a piece of CUDA code: cudaMemGetInfo(&freeMem, &totalMem); I get 256MB of total memory … |
| | Greetings, My name is Micah, I live in the US and I am a recent graduate in the field of Computer Science. I have experience in C++, C# and Java but only basic console programs and minor OOP. I have a little database administration experience. I currently work in the …  |
| | Hi all, I will be using the USRP Software Defined Radio to receive satellite signals for a project. I have been looking around, but I can't seem to find any tutorials that can help me do this. I know that the USRP's have an API that interfaces c++, but have … |
| | Here are the errors Binary.cpp: In function `std::istream& operator>>(std::istream&, binary&)': Binary.cpp:24: error: `nodeType*binary::head_ptr' is private Binary.cpp:114: error: within this context Binary.cpp:24: error: `nodeType*binary::head_ptr' is private Binary.cpp:115: error: within this context Binary.cpp:115: error: call of overloaded `list_clear(nodeType*&)' is ambiguous Binary.cpp:28: note: candidates are: void list_clear(nodeType*&) Binary.cpp:56: note: void list_clear(nodeType*) Binary.cpp:24: error: …  |
| | how to downalod windows.h header file  |
| | Hello, I need help to read entire string line with white spaces. I tried many ways but they didn't work :| If I remove `cin>> company_name;`the run jumps to `std::cout << "Enter the symbol of the company: ";` without completing reading company_name from the user! AND, If I keep `cin>> …  |
| | 1. What happens when you add an element to a vector that is already at capacity? Does std::vector have a "capacity"? 2. In C++ and OOP in general, what do you call a design where a Person class inherits from Head, Arm, Body, Leg classes instead of the other way … |
| | These are the errors that i am getting J:Project 2Binary.cpp: In constructor `binary::binary()': J:Project 2Binary.cpp:37: error: no match for 'operator=' in '((binary*)this)->binary::head_ptr = 0' J:Project 2Binary.cpp:6: note: candidates are: nodeType& nodeType::operator=(const nodeType&) J:Project 2Binary.cpp: In copy constructor `binary::binary(const binary&)': J:Project 2Binary.cpp:43: error: invalid initialization of reference of type 'nodeType*&' from … |
 | I have develop a functor array without class but fail to write a functor relate to class. Here is the code without class int returnOne (void) { int a = 0; a++; return 10; } int returnTwo (void) { int a = 0; a++; return 20; } typedef int (*functor2) … |
| | Hi there I have a C++ code and I need to write it in C to do the simulation. Can anyone help? Thank you so much. and for random.hpp I will replace that with random.c (a random number generator in c) #include <cmath> #include <cstdlib> #include <fstream> #include <iostream> #include …  |
| | i installed codeblocks on windows8 but when i compile one of c program error message mingw32-g++.exe: Internal error: Aborted (program collect2) the same problem happened on devc either what will l do |
| | How many bytes of memory is allocated when you declare: double* p1[10]; |
| | I am trying to get each elemnt of a text file with 13 integers in one line, each seperated by a space, into each slot of an array, any idea how to do this?  |
| | In the following program I declared "long" for a, but still getting incorrect negative output after the 1860th term (all are supposed to be positive). What is the cause? int main() { for (int i=1; i<=2000; i++) { long a=i*i*i/2-3*i*i/2+3*i-1; cout << setw(3) << i << "\t" << setw(8) << … |
| | I've written bucket sort, to read a list of numbers from a file, sort them, then write the sorted list to a new file. My program runs through the process just as it should, but whenever a bucket is completely sorted, it doesn't save the changes in the bucket. My … |
| | Hello everyone I am trying to make a app. witch uses windows that pop-up if a button is pressed. the problem is, i don't know how to make more than one window. Can anyone tell me how to do that? I am using Microsoft Visual Studio 2010 Express, in a … |
 | Hello, I'm building opencv library with cmake for mingw to be used with qt and i've been able to generate the makefilelist. But when i type **mingw32-make** at the command prompt i get error when it's 44% built. error says: *Cannot export _ZN12_GLOBAL__N_13R)p3aLLEv: symbol not found Cannot export _ZN12_GLOBAL__N_17CmpType3allEv: symbol … |
| | Hi, I have a problem compiling the "pjproject.sln", and I have the following error appearing: "fatal error LNK1104: cannot open file 'dsound.lib'" Build log was saved at "file://c:\Users\SLF101\Desktop\PJ Project\pjproject-2.0.1\pjmedia\build\output\pjmedia_test-i386-Win32-vc8-Debug\BuildLog.htm". Could anyone help me solve that problem? It seems like it does not want to open the "dsound.lib" file everywhere. That … |
 | when we press the button ,then appear like this private: System::Void textBox1_TextChanged(System::Object^ sender, System::EventArgs^ e) { } after that if we want to appear the caracter like "A" , after press the button , how is the program for that?? thank you before  |
| | Greetings As the titles says I wanna know what are versions of C++ other than Standard C++ and what are the differents between those version if any! Second question what is contained in the .exe file I'm using Microsoft compiler "Visual Studio 2010 IDE"? Is it contains the assembly instructions? … |
| | Hi again! So, I have an object that gets appended to a linked list now. Now I need to have all of that item's data output in a formatted manner - something similar to this: CD Artist CD Title CD Length Track Name Track Length Arist name here Title here … |
| | Basically, I'm getting an error when I try to append a CD object to my linked list. What error? This one: > First-chance exception at 0x550257aa (msvcr100d.dll) in Programming 3 Course Project.exe: 0xC0000005: Access violation reading location 0xfeeefee2. > Unhandled exception at 0x550257aa (msvcr100d.dll) in Programming 3 Course Project.exe: 0xC0000005: … |
| | I have a class called Control. All other "controls" inherit from this class. Some controls need a default constructor so that I can assign or construct them later. The classes look like: class Control { private: //All Members Here.. void Swap(Control &C); public: Control(DWORD dwExStyle, std::string Class, std::string Title, ....); … |
| | I need to read this into a arrays. 123455 45 67 87 69 98 3456787 67 98 34 54 67 456778 87 76 89 76 34 344568 65 78 76 45 98 56789 98 76 45 34 54 Here is the code I have void getGrades(double exam[], int studentId[]) { …  |
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