49,757 Topics
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| | Hey guys I'm having an extremely hard time splitting or combining values into binary.. [CODE] #define Chr(n) ((char)(n)) #define Ord(c) ((int)(unsigned char)(c)) int DecToBin(int Num) { int Bin = 0, Pos = 1; while (Num > 0) { Bin += (Num % 2) * Pos; Num /= 2; Pos *= … |
| | Hi all, I am trying to write a C++ program to create a simple text-based interface that should print out the relevant stubs when a certain choice is made. I am however getting linking errors such as-->[Linker error] undefined reference to `Database::AddStudent()' , that i cant seem to fix. Any … |
| | So, just for fun I have been making a small text-based game to test my knowledge of C++ so far. However, I have encountered an odd error where commands will execute once, and then after that return the same output repeatedly. Could anyone analyze this and see what's wrong? Here …  |
| | Hello, I am a beginner at programming and I am having some trouble finding the error in my code(pasted below). I am first trying to come up with a (1) function to evaluate integers at a given power.(2) A function to check if an integer is a perfect number. I … |
 | I am running into (pretty serious) valgrind issues as I run my application. As far as I can tell, my BST has some memory loss, to put it rather clinically. I've tried to create the right destructor on my BST<T> class, which contains BSTNode<T> nodes (both are shown below in …  |
| | *Pass by value, reference I need to write 4 functions including main to display a report with the size of room in square feet, cost of carpet,cost to install the carpet. I am having trouble with using the last function to compute the costs using data from the other functions … |
| | Hi, I'd like to print a line of 'double' or of 'integer' type according to T typename. I tried to compare T with typeof but to no success. [CODE] template <typename T> void printArray(unsigned int x_sz, unsigned int y_sz, T * arr[], std::string title) { double f; unsigned short int … |
| | Hi, I'm getting pretty frustrated with my code at this point, Im trying to implement a queue class to hold a number of integers... however dev (the compiler im using) keeps spitting out the errors [CODE] [Linker error] undefined reference to `QueueType<int>::QueueType()' [Linker error] undefined reference to `QueueType<int>::~QueueType()' [/CODE] here … |
| | Hello I had a problem about using mathematical formulas. someone showed this this site : [url]http://software-dev.jimdo.com/[/url] I found there the application, but I don't know how to get the unit. did someone already use it?  |
| | Dear All, I have written a code to implement an algorithm for base conversion from decimal to any base between 2 and 36 given in RG Dromey. Below is my code and I have a few questions relating to it: [CODE] #include<stdio.h> #include<stdlib.h> int main() { int newbase,zero=atoi(0),q,ndigit=0,r,ascii,i; char newrep[100]; …  |
| | i want to perform operations on large integers which are of 256 bits i mean i want to handle a hundred digit integer and perform multiplication and division on them is there any good idea to store them and then use them easily  |
| | So, I'm working on making a encrypted in C++, just a basic one. The encrypter needs to have a minimum character limit but it's not working. It's not coming up with any compiler errors, but instead just acting as if the if statement isn't there... [code] #define _WIN32_WINNT 0x0500 #include … |
| | please help meeee write a program for a local bank to manage their accounts. the bank offers two account types,saving and checking,each customer must maintain a minimum balance, if the customer`s balance falls below the minimum ,ther is a service charge 10 aed for saving and 25AED for checking. the … |
| | Hi I have wrote some code but it never seems to reach the for loop and cannot understand why. I want it to check whether or not the word is in the array and if it is it will break out and leave the method else it will add to … |
| | hello there. i've installed mingw compiler and im wondering how i would go about setting up notepad++ to compile my c/c++ code?. How do i do this? -regards. |
| | It doesn't run! Can you help me please? Devc++ compiles it, and also launch the exe file, but it stops after the second for cycle! Why? :D [CODE]#include <iostream> #include <string> using namespace std; int main() { int N,i,z; cout<<"Digitare il umero di caratteri che contengono il nome "; cin>>N; … |
| | I am receiving the following error messages and I can't figure out why, I'm guessing there's just some syntax rule or something I am just unaware of... there errors are: error LNK2019: unresolved external symbol "void __cdecl validateWidgets(int &)" (?validateWidgets@@YAXAAH@Z) referenced in function "void __cdecl manager(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" … |
| | How can I make my DLL constantly check for hotkeys but without affecting other functions in it? If I put a loop, it will not be able to get any other calls to functions.. Do I create a thread and pass my functions to the thread upon attachment? My silly … |
| | I'm trying to convert this (Pascal) to C++.. My attempt is below this.. [CODE] function CompressString(const Str: string): string; var Destlen:longword; begin result := ''; Destlen :=BufferLen; if length(str) < 1 then exit; if compress(BufferString,destlen,PChar(Str),length(str)) = Z_OK then begin setlength(result,Destlen + SizeOf(Integer)); PInteger(@result[1])^ := Length(str); Move(bufferstring[0],result[5],Destlen); end; end; [/CODE] [CODE] … |
| | HEY guys i have a question, i have a program that takes a string and then it gives three levels of encryption 1 to 3. i have no problem with the code as its working. its just when i compile it, if i choose option 1, i need to recompile … |
 | I recently looked at [URL="http://www.songho.ca/opengl/gl_vbo.html"]this[/URL] description of VBOs and a sample implementation of them. When I ran the executable, it was significantly faster with no VBOs than with them. I don't understand why it should be slower with the VBOs than without. Can anybody explain why? |
| | My code is: [CODE] #include <windows.h> #include <iostream> using namespace std; struct ReplacementFlags { public: bool rfReplaceAll, rfIgnoreCase; ReplacementFlags(bool ReplaceAll = false, bool IgnoreCase = false) : rfReplaceAll(ReplaceAll), rfIgnoreCase(IgnoreCase) {} ~ReplacementFlags() {} ReplacementFlags& operator ()(bool ReplaceAll = false, bool IgnoreCase = false) { if((rfReplaceAll != ReplaceAll) && (rfIgnoreCase != IgnoreCase)) … |
| | Hello! Below is a function exhibiting a simple stopwatch mechanism. It stops when the user presses any key and goes back to the main menu. My question is, is there anyway I can pause the time and continue it as desired by the user? I would like to use "P" …  |
| | Example code: [CODE]HWND CreateButton(const HWND hParent,const HINSTANCE hInst,DWORD dwStyle, const RECT& rc,const int id,const ustring& caption) { dwStyle|=WS_CHILD|WS_VISIBLE; return CreateWindowEx(0, _T("button"), caption.c_str(), dwStyle, rc.left, rc.top, rc.right, rc.bottom, hParent, reinterpret_cast<HMENU>(static_cast<INT_PTR>(id)), hInst, 0); }[/CODE] The part I dont get is: [CODE]dwStyle|=WS_CHILD|WS_VISIBLE;[/CODE] So the question would be why do we use '|' and … |
| | hey what's up guys, I'm writing some C++ code used to do math operations on polynomials that are contained in a input file. Right now I'm stuck on the actual streaming in of the files. The .txt input file is in the format as follows 1 1 2 2 3 … |
| | hey guys can u help me to solve this program have to do 4 function , call the following functions by passing the array: (i) A function to input all information. (ii) A function to calculate the average score for each student and the average score for the class. Find … |
| | Hi! I'm writing a program in C++ where the user is asked to enter a list of ten names and cities of residence in the format <firstname> <Surname> <city>. I then have to sort the list by city and then in each city group alphabetically by name, using Bubblesort. I'm … |
| | Hi, I'm writing a program in C++ to ask the user for a list of ten names and cities of residence in the format <firstname> <Surname> <city>. The amount of spaces between each doesn't matter as I will be using isspace. then i have to sort the list by city … |
| | can you help me with these a little problem of mine.. we are having a pair project where the program is all about enrollment system. in this program, we need to add a record, view, and search records. now. my problem is... i cannot add another record within this code... … |
| | Can you please help me out on my project?, its like a phonebook on cellphone it should be display the ADD CONTACTS, DELETE, EDIT, SAVE, VIEW, SEARCH. I sunno how to edit and delete the contacts can you help me on this.. i came out on this,.. #include<iostream.h> #include<conio.h> void … |
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