51,593 Topics
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| | Hello All I have little confusion between Abstraction and encapsulation. Abstraction means Giving only essential things and hiding unnecessary details. Encapsulation means binding the data members and methods together in a capsule form to avoid accidental changes to data from external users. Now both uses hiding of data. What is … |
| | Hello, would like to ask about this problem im facing. [code] #include <cstdlib> #include <iostream> #include <fstream> #include <ios> #include <string> #include <string.h> #include <vector> #include <sstream> #include <algorithm> #define MAX_MSG 30 using namespace std; vector<UserInit> ReadUsersInitial() { fstream file ("Users_initial.txt"); FILE *file1 = fopen("Users_initial.txt", "r"); string tempFile; if (file.good()) …  |
| | I am just trying to get some information. Currently we have a C sharp code,looking into a trading, which drags real time date of a stock and stores it into a data base as a CSV file. However I require this live data to be autopopulated into an Open excel … |
| | I;m having a hell of a time this simple program im trying to create... any help would be great! most of it is right except can't get the formula to show up so theres an extra line of code in there because i dont know what to do this is … |
 | [CODE]template < class Object> void fix(queueType < Object> &q, int n) { -if (n>=1) -{ ---Object temp = q.front(); ---q.deleteQueue(); ---fix(q,n-1); ---q.addQueue(temp); -} }[/CODE] (a)what will the final state of queue q1 be after the statement fix(q1,2); is exexuted, if q1 has the values (1,2,3,4,5} my answer: {2,3,4,5,1} because q.addQueue … |
| | I'm trying to get a players name from a file on their computer and then display that name onto a Label on my chat program. This Label is also used when sending messages to the server in order to display the persons name with their message. The problem I'm having … |
 | This is a conversion question that has me stumped. I need to convert an unsigned char to a signed float. Some examples: 0xFF becomes 1.0f 0x00 becomes -1.0f 0x80 becomes ~0.0f The only idea that I could come up with was a massive switch statement. But a switch statement will …  |
| | Hello I am working in my study with xml file therefore I want to read an xml file with c++ to get the information such the coordinates of the points in order to use them later. I have written the following code, but [U][B]I have just taken only one value[/B][/U]. …  |
| | [CODE]void SortedNumberList::add(double number) { ListNode *nodePtr, *previousNodePtr; if (head == NULL || head->value >= number) { head = new ListNode(number, head); } else { previousNodePtr = head; nodePtr = head->next; while (nodePtr != NULL && nodePtr->value < number) { previousNodePtr = nodePtr; nodePtr = nodePtr->next; } previousNodePtr->next = new ListNode(number, …  |
| | Hello everyone, I'm trying to declare a 2-dimension (A[][]) dynamic matrix but I'm having problems ... The A's elements need to be FLOAT. The size of lines and columns are both vectorX.size(). Could you help me please? One of error's message is: "cannot convert `double' to `float**' in initialization" [CODE] … |
| | Hi there. I'm trying to write a program that will establish a DB of names and Ids. The thing is i don't want to scan the entered data to a temporary variable and then put it into the file, but to scan the user's input directly to the file itself. …  |
| | [B][U]Write a class named Employee that has the following member variables:[/U][/B] [B]name:[/B] The name attribute holds an employee’s first and last name [B]idNumber: [/B] The idNumber attribute is a string variable that holds an employee’s ID number [B]department: [/B] The department attribute holds the name of the employee’s department [B]position:[/B] … |
| | I'm trying to make a calculator that parses input like [TEX]( 3 + 2 ) * 5[/TEX] I want to use formal grammar for this, and I'm wondering how to organize this. I was thinking having a class for Value, which would basically just be a number. Then I want …  |
| | There are occasionally posts asking how to remove white space from string of characters (either a C-style `char` array, or a C++ `std::string`). Using functions in standard C++ libraries, this is quite an easy thing to do: #include <string> #include <algorithm> #include <iostream> #include <cctype> int main() { /* Make … |
| | Ok this is my situation I have this header file: [CODE]struct dir { char name[3]; int root_dir; int has_children; int num_children; int offset_to_children[2]; int offset_to_files[16]; }; struct files { char name[5]; int size; int offset_to_beginning; int has_fragment; int next_fragment; }; struct fat { int files; int dirs; struct dir *dir_array; …  |
| | hello.. [COLOR="Red"]i need code for finding all possible combination of repetitive characters using recursion function.[/COLOR] actually the question i s "Imagine a robot sitting on upper left corner of NxN grid. the robot can only move in two direction "Right" and "Down". write a recursive function to find all possible … |
| | Hello everyone, i have written a program in c++ using Microsoft visual studio which runs perfectly, at least to my satisfaction. However i thought it would be nice to create a graphical user interface to it, and i have used Ms Visual C++ to design one and Visual c++ can … |
| | can some one tell me a prog of making different combinations using recursion in c/c++ and it should also be a function |
| | How can I send an email through C++. I need to make the following: [CODE]bool SendMail(char* from, char* to, char* title, char* msg) { //What now? //Return true on success, false otherwise }[/CODE] |
| | Hey, does anyone know which function/s i need to use to copy a file from one subdirectory to another, without changing the name? im on windows if that helps.  |
| | Ok, I received an assignment today, and we have our weekly test tomorrow. I was going through the 25 questions, and this is my first problem... The question is as follows: Write a program to keep count of created objects for a class. Make suitable assumptions. For example, in the … |
| | Hi every one, in fact need helps very quicly, I have project system have to use c++ program but i dont know how to include file in program to read and write. I will put my soluation to help me some one and the question, to know the person who … |
| | Hi, I need to find the 'length' of union between 2 vectors. The code I have is[CODE] vector<int> v1,v2; vector<int> unionsetv; vector<int>::iterator it; v1.push_back(1);v1.push_back(2);v1.push_back(3); v2.push_back(3);v2.push_back(2);v2.push_back(4); it = set_union(v1.begin(),v1.end(),v2.begin(),v2.end(),back_inserter(unionsetv)); cout << unionsetv.size()<< " "; cout << int(it - unionsetv.begin())<< " " ; [/CODE] I could not get this to work and … |
| | Can any body suggest me how can I free the dynamic memory in the given code [CODE]int fun(CString qry, CStringList *List,int n) { using namespace std; string sqlStmt = qry; int i; this->stmt = this->conn->createStatement (sqlStmt); ResultSet *rset = this->stmt->executeQuery (); string **oraRecordsStr=NULL; try { while (rset->next()) { if(oraRecordsStr == … |
| | [CODE]#include<iostream.h> void main() { void prn(int a); void prn(int a,int b); int x,y; cout<<”\n enter a number”; cin>>x; prn(x); cout<<”\n enter two numbers”; cin>>x>>y; prn(x,y); getch(); } void prn(int a) { cout<<a; return ; } void prn(int a,int b) { cout<<a<<b; return ; }[/CODE]  |
| | Well, I'm not exactly an expert with C++, and I have been making a text RP for general use. I'm having some problems.[CODE]#include "Library.h" void main() { //welcome screen cout <<"####Welcome to Xe0n RP, part of the Xe0n project started by Adil\n"; cout <<"####Programmed in C++\n"; cout <<"####Currently in beta\n"; … |
| | [CODE]//plz run .an accrued .Processor fault error.plz help me /* Bank taransection Program.cpp : Defines the entry point for the console application. */ #include "stdafx.h" #include<iostream> #include<string.h> #include<string> #include<process.h> #include<conio.h> using namespace std; class details { public: char *name; int age; char branch[50]; char city[40]; void getdetails() { name=new char[20]; … |
| | Hi all, well my problem isn't a practical problem. I have a project to do which is a word game.First of all i have a .txt (a dictionary) my program has to fetch a random word and shuffle it. With the combination of those letters the program has to find … |
| | Could someone please run this code in XP and let me know if it works. I am on Windows 7 and have looked at this code for 2 months now and not able to find a solution to save my life. If you see what is wrong with it though … |
 | Hi, new to vectors.. I have a little problem with them - with arrays you could just do like array [ index ] = new value, and everything is ok. How it is with vectors ? how can i change specific index value ? |
| | I have a problem when I declare template class inside another a template class. [CODE]#pragma once template<typename T> class D<T>;//error 1,2 template<typename T> class B { D* d; public: B(void){ } ~B(void){ } }; [/CODE] [CODE]#pragma once #include<iostream> using namespace std; template<typename T> class B<T>;// error 3 template<typename T> class … |
| | hi i am facing same error, but when i go to defination and update code same as you suggest but it wont work, Error : Error 1 error C1189: #error : This file requires _WIN32_WINNT to be #defined at least to 0x0403. Value 0x0501 or higher is recommended. c:\Program Files\Microsoft … |
 | Hey guys! I am new at Class and object things. Before introducing the object oriented issues my life was easier! I wrote these codes here: /*--------------------------------------------------------------------------------------- Source File: OOP4.Henri.cpp Program name: Object Oriented program, Assignment 4 Author: Hassan Aghaei Baradaran (Henri) Compiler: Bloodshd Dev-C++ 4.9.9.2 Purpose: To define and demonstrate … |
| | In my code i have got when player touches point,it registers collision and prints out score in the console, the problem is that for some reason instead of just printing one score-point per point (There is 10 points in the array) it continues to add score for as long as … |
 | Hey; I'm trying to change the mode of a file in Linux system. I know I must use chmod(const char* path, mode_t mode) but I don't really know how to handle the mode. How can I manipulate mode_t variable to apply my own mode? |
| | Hi , I need to parse a file that contain linux interface information. My file text is like below [QUOTE] Interface ge1 Hardware is Ethernet Current HW addr: 00a1.2599.0003 Physical:00a1.2599.0003 Description: BC3 - Slot 3 (Phys Slot 7) index 5001 metric 1 mtu 1500 duplex-full arp ageing timeout 0 <BROADCAST,MULTICAST> …  |
| | I have been written 2 classes A,B. and I want class A to use class B and vice verse but I have a problem when I tried to get the content of the class like(*A) that's my code. [CODE]#pragma once #include<iostream> using namespace std; class B; class D { B* … |
| | Here is the VC++ code [code]SVisFileDescriptor filedescriptor1; ZeroMemory(&filedescriptor1, sizeof(SVisFileDescriptor)); filedescriptor1.has_alpha_channel=CVisImageBase::IsAlphaWritten(); filedescriptor1.jpeg_quality=0; filedescriptor1.filename=currentpath1; pframe->SetTimer(22,5000,NULL); imageS1.WriteFile(filedescriptor1);[/code] This block is basically replicated in 3 different functions which in essence save 1 image EACH from a camera connected. I am not sure why this is happening. But my hunch is there is an overlap … |
| | Hi, I've just started learning C++ and I have a problem figuring out an assignment. It would be really great if someone could please help me. :icon_cheesygrin: The program should look something like this: Input number: 6 (then the program should read out following) * ** *** **** ***** ****** … |
| | The code below is what I have done up so far. I'm currently trying to complete one of the 4 classes I have, so the codes are incomplete and made to work at it's current stage. Q1. I need to have 3 different sorting criteria: 1.Sort by X (asc/desc) 2.Sort … |
| | I am using Microsoft Visual Studio 08 version on a computer where I do not have admin privileges. After building my project, I want to put the .exe into the Visual Studio 08's VC folder in order to run dumpbin from the command prompt, but it won't let me copy … |
| | waht the steps to make c++ compiler my compiler is to define - ,+ * / mathematical expresstion ? how i can make it plz :) i realy need help |
 | [I][B]I'm[/B][/I] trying to load compressed images to a sprite object with C++, using a [URL="http://msdn.microsoft.com/en-us/library/bb174249%28v=vs.85%29.aspx"]LPD3DXSPRITE[/URL] and the [URL="http://msdn.microsoft.com/en-us/library/bb172802%28v=vs.85%29.aspx"]D3DXCreateTextureFromFileEx()[/URL] function to load it and of course [URL="http://msdn.microsoft.com/en-us/library/bb172867%28v=vs.85%29.aspx"]D3DXGetImageInfoFromFile()[/URL] to get some info, but I don't know how to go about it. How do I decompress them before loading them to memory and … |
| | [CODE]class Connection { public: typedef boost::shared_ptr<Connection> pointer; static pointer create(boost::asio::io_service& io_service){return pointer(new Connection(io_service));} explicit Connection(boost::asio::io_service& io_service); virtual ~Connection(); boost::asio::ip::tcp::socket& socket(); -->>>virtual void OnConnected()=0; void Send(uint8_t* buffer, int length); bool Receive(); private: void handler(const boost::system::error_code& error, std::size_t bytes_transferred ); boost::asio::ip::tcp::socket socket_; };[/CODE] when am trying to use virtual void OnConnected()=0; it … |
| | Line2D Points is made up of Point2D x and y Line2D.h [code] #ifndef LINE2D__H #define LINE2D__H #include <iostream> #include <fstream> #include <string.h> #include <ostream> #include <sstream> #include <cstdio> #include <vector> #include <set> #include <cstdlib> #include <ctype.h> #include "Point2D.h" using namespace std; class Line2D { friend ostream& operator<<(ostream&, const Line2D&); private: … |
| | I want to declare template inside a class .h file [CODE]# include<stdio.h> # include<iostream> using namespace std; #pragma once template <typename T> class LeafNode { T records; LeafNode* next; int size; public: LeafNode(void); ~LeafNode(void); };[/CODE] .cpp file [CODE]#include "LeafNode.h" template <typename T> LeafNode::LeafNode(void) { } template <typename T> LeafNode::~LeafNode(void) { … |
 | I really need help on my latest C++ assignment. The program was due a week ago and I'm still beating my head against a wall here. This is supposed to be a VERY SIMPLE linked list implementation. I have rewritten this dang thing countless times in as many different configurations … |
| | I am using Borland C++ Builder 5. I wish to use a TRichEdit component, and be able to programmatically add text to it, and be able to have different fonts/colors within the same line of text. I am able to change the font/color just fine, but only know how to … |
| | 1. int i=1; 2. while (i <= n) { 3. for (int j=1; j<10; j++) 4. sum++; 5. i++; 6. } 7. for( int j = 1; j <= n; j++ ) 8. for( int k = 1; k <= n; k=k*2 ) 9. sum++; 1. How many times is … |
| | I wrote this script for my classmates where we shoot at each other, but after it compiles it says that there was an error and exits out. heres my script, if there is anything in there that needs to be fixed please help me. [CODE]#include <allegro.h> #include <process.h> #include <stdio.h> … |
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