49,766 Topics
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| | I am trying to use pow(2,a); and I am getting a error 'pow' ambigous call to over load function. I don't understand why, I added the cmath libarary. Here is the code. [CODE] #include <iostream> #include <cmath> using namespace std; int binaryToDec(int); int main() { binaryToDec(1110); return 0; } int … |
| | Hi Everyone, I need help understanding how these traversals work :s [url]http://en.wikipedia.org/wiki/Tree_traversal[/url] On this page they have the code for these tree traversals, but I don't quite get it. For example, printing using the in-order traversal (using the example tree provided on the site) should give: A, B, C, D, … |
| | Hey folks, Probably a stupid error on my part, but I'm having trouble with this. Using ioctl calls to get adapter info on a linux box. I've got it working using a fixed size array (of struct ifreq) but it's not working when I try to use a dynamic array … |
 | Hi Would anyone know if there is a book explaining all the various C++ Libraries and what features they encapsulate? I'm thinking in terms of, for example: iostream -- then a list of features and functions in iostream etc. Could anyone suggest any books or good reference material for this … |
| | I am trying to add two matrices and get error when I add two matrices in the line rslt = m1+m2 using operator overloading. Both m1 and m2 are matrix classes. Here is the code: [CODE] int main(int argc,char *argv[]) { matrix * rslt; //matrix *m1 = new matrix(); matrix … |
| | hi!! i want to know about the huffman algoriyhm and its implementation. how the huffman code works and its use, a code in c/c++ language |
| | Hello, I'm making a program that can play Bejeweled 2. Everything is working smooth except for a glitch in the movement algorithm. If anyone is really good at making these type of algorithms can you look at this code and/or give me some hints ? This is the core algorithm … |
| | Hello, Need a litle help with a problem. It is posible to automatically change the value of variables? For example: If i have 2 variables: "a" and "b", and let's say initially "a"= 3 and "b"= "a"+5; If i change "a" = 7, how can i do that "b" automatically …  |
| | I have to program Portable Data Terminal(PDT) using C++. Is there any site that gives the details? I could not find. Please help me with code examples bcause I am new to this. Thanks in advance |
| | Gentlemen, Is it possible to initialize the array at the time of creation?? I mean: int *a = new int[10]; // here array is only created. I wanna initialize the same too here itself. Is it possible??? |
| | my program runs but it only displays the passing ones not the failers it a mulitinention array that user enters the amount a student and grades to be entered. an such make is the pass and if low ey fail. but my program just reads the first grade and if … |
| | hey guys. i am having a problem with combo boxes in c++. i am making a very simple game for a subject at uni, in this game you pick up guns and shoot monsters. each gun has attributes; damage range and name. when you pick up a gun it is … |
 | How cand i read from registry this two types? REG_BINARY & REG_MULTI_SZ ? |
| | Hi, In my application I have two object type. One is field item, other is composite item. Composite items may contain two or more field items. Here is my composite item implementation. [CODE] #include "compositeitem.h" CompositeItem::CompositeItem(QString id,QList<FieldItem *> _children) { children = _children; } CompositeItem::~CompositeItem() { } QRectF CompositeItem::boundingRect() const … |
| | I want to know how a read/write calls is accomplished in linux? I mean how a function say read() will read the data from a file. What all will be the steps from user mode read() function call to kernel mode? Will anybody explain the steps or let me know … |
| | Hiii... I want to know how to open two windows forms at a time... when i give as Application::Run(gcnew Form1() ); Application::Run(gcnew Form2() ); Then, the Form2 will open when first one closes,... So any one please help any other way is their so that , i can open two … |
| | Hello, when I give fprintf the character 0x0A, then it prints out 0x0D and 0x0A (which is \n in Windows). How can I print only 0x0A? I need to print a picture into a file containing 16-bit pixels, (and some bytes contain the value of 0x0A,) so it is very … |
| | Hi everyone I m openning this theat because I want to see if any of you can help me... well lets see ... I got my full time back at work (after 2 years :o ) and Im worry about college because I do not have enough time to complete … |
| | hi all, i want to insert some data into my database (ms access) using c++...for ur info, im trying to do a register user for my login page..i hope after insert some data to text box and click button "ok"....all the inserted data was stored to database (ms access)....how to … |
| | Hey guys, i am working on a project which basically takes a string which is being inputted by people and then adding it together and displaying in a certain format. What i am having problem is when i try to read the string and store it into the functions. [CODE]class …  |
| | Ok so I have an operator* for left scalar matrix multiplication that is correctly outputting for the first 4 outputs and not for the next 4. If I have a matrix M2 with inputs [1,2;3,4;5,6;7,8] (the semicolon means next column), and multiplying it by 4, then I am getting the …  |
| | I need to somehow open and read a picture of a map (jpg/png/bmp) into a 2d array so I can use the array to determine what terrain type is at that element/position on the map. Looking for tut's on working with picture files (jpg/png/bmp) with c++ I have found none. …  |
| | after i input the three letter, i cant get the number back.. [CODE]#include <iostream> using namespace std; class Month{ public: int month; Month(char& one, char& two, char& three); Month(int& numb); Month(); void input1(istream& input); void input2(istream& input); void output1(ostream& output); void output2(ostream& output); }; int main (){ char x,y,z; int … |
| | What type of developer creates audio plugins for digital audio workstations like pro tools and cubase  |
| | [CODE]#pragma warning (disable: 4786) #include <algorithm> #include <iostream> #include <string> struct PhoneBook { PhoneBook(std::string s, long num) { name = s ; number = num ; } PhoneBook() {} friend std::ostream& operator<<(std::ostream&, const PhoneBook&) ; long number ; std::string name ; } ; std::ostream& operator<<(std::ostream& os, const PhoneBook& rpb) { … |
| | Hey guys, how would i create a random number to decide whether it should enqueue the customer or not. thank you. |
| | Hi, I'm trying to figure out how classes work. I currently am working on getting a class to read a string and then place it into an array, as well as have the class then output the entire array. I wrote the following code to make sure i could get … |
| | I am trying to learn about recursives and found this code on the internet. It works, but am not sure why. Could some one explain to me why this works. I have posted comments by the function to explain what I do not understand. [CODE] #include <iostream> using namespace std; … |
| | Hello! Suppose I'm using an external API, and in that API, they define: const Bar& Foo() const; So this function returns a Bar by reference. Now, I have a function void f() { Bar P = Foo(); } Is it safe to const_cast whatever is returned by Foo? I want … |
| | I'm doing a homework assignment about constructors and this is really bothering me. I keep getting the error "constructors are not allowed a return type". I HAVE put a semicolon after the class declaration. I'll post my code here. [CODE]// Joseph Yong // CSC2430 // Homework_6 //Header File /*--------------------------------------------------------------------------*/ #include …  |
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