51,593 Topics
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| | Basically, the assignment is to create a huge integer class by using a singly linked list, wherein each element of the linked list holds one digit of the number of the huge int. I only have to do addition and multiplication, and addition works. Multiplication *should* work, as far as … |
| | Hello friends...I'm having confusion about binary operator overloading in the following program. The question goes like this. Qn. Create a class time with two member variables as hours and minutes of integer type,write default,parameterized and copy constructor. Overload necessary operators to compute T3=5+T1+T2, where T1,T2 and T3 are time objects. … |
| | Hello, about 3 months ago I made simple chat using MySQL++ which is working fine, login function: [url]http://pastebin.com/Mdup4zi6[/url] but today I'm creating Control Panel, I've copied and changed this function a little bit, but i'm getting 0 results (if I copy syntax to navicat I'll get password so...) login function: … |
| | Hello, I am trying to read data from a file and make each saved item in the file an option on the combobox so that the user can select whatever he wants .The problem is in adding items to combobox not in reading from file .can anybody help me plz …  |
| | Hi guys, the title says it all, I have produced list of numbers from a c++ program into an excel file, and I want to make a CDF graph out of it. What I know is that I need to find numbers greater than zero, then number greater than one …  |
| | Hello everybody, I am still learning c++,I already know about objects, classes, pointers and i can use them. I wanna move to game development, but should I go further in console apps before moving to game dev ? Please help me because i am 14 years old and i would … |
| | hi.. this is part of an assignment.. but any help will be greatly appreciated F(0) = 0 where F(z) is a linear polynomial of order n with complex coefficients F(z) = A(n)Z^n + A(n-1)Z^n-1 + ... + A(1) Z + A(0) = 0 this hasent formatted very well.. it's A(subscript … |
| | hi! What is makefile? How does it work? Is it done in the terminal? I am using Unix OS |
| | Good day to everyone. I have this trouble of stopping the timer at a specific time, say I have to stop the timer at 1:30. When I try to run it, it doesn't stop. Please help. Here's my C++ code. [CODE] #include <iostream> #include <time.h> using namespace std; void wait … |
| | I am using a priority_queue-s for implementing A* and Dijkstra's algorithm. Is there a point writing my own heap for time optimization? How faster would it be? I read in wikipedia that Fibonacci heap will be the best. Do you agree?  |
| | Greetings, this is my first post here but I will try to do it correctly. I know this specific question is a common one, but I am not looking for someone to do it for me, I just need someone to help me out a little. I understand the basics … |
 | Well been working on a project that has a bit of sandbox approach to building things. It works pretty well, but I want users to be able to implement C# script for the objects or to keep track of them and perform analytics. I have got it somewhat working as … |
| | i watched this tutorial video [url]http://thenewboston.org/watch.php?cat=14&number=13[/url] and for some reason it doesn't work.. it says time is undeclared for some reason [CODE]#include <stdio.h> #include <conio.h> #include <stdlib.h> int main(void) { int i=0; srand(time(NULL)); while (i<200) { printf("%d\n", 1+rand()%6); i++; system("cls"); } system("PAUSE"); return 0; } [/CODE] |
 | Hello :) (Too many questions about this)! Basically, I'm trying to display the contents of a matrix without using "cout" in my class. (It's a bad method) I've tried to return an array, but, that failed miserably.. So I've got a method in my class: [code] double Matrix::read(int theRow, int …  |
| | I have been programming in C++ for a while now. I heard about RSA Encryption algorithm, and i have read many online sites on how it works. But i still cant grasp how the algorithm works. i have tried to make programs with RSA, but they doesnt encrypt. If you …  |
| | I have this assignment where i have to create a program that executes another one, and it can terminate it, see how much ram it uses, and runtime. i have tried using system(); but it doesn't enable me to terminate the program after a set duration of time.. Any help …  |
| | I'm studying enumeration at the minute and i've a quick question. In the following code using enum, are you limited to ouputting the sequence number of the possible values, or can you use the enum operator to output the text "green"? [CODE] #include <iostream> #include <sstream> #include <fstream> #include "conio.h" … |
| | Hello, This code is for (hospital management system). This code allow you to add patients. There are two types of patients. which is: 1. Normal patient. 2. Critically ill patient. once you added any patient. You will be able to show all patient using "ShowAllPatient;" method. -> i want the …  |
| | Hello, basically I want to return an array from a function (So I don't output things in the class - just main) But I seem to get the error: "invalid types 'int[int]' for array subscript" Here is the code: [code] #include <iostream> using namespace std; int matrix() { int matrix[10] … |
 | I normally don't try to get outside help on homework that is still due, but I've kinda' hit a wall on this one. I'm trying to write a program that dynamically creates a list of scores for a group of students. It has to ask the user how many students … |
| | what if i want to find out the age or period laps between certain dates for a database of 200 persons. for example: 1- aaaa dob: 12-12-1983 2- bbbb dob: 01-04-1980 i want to get out put as aaaa's age on 01-01-2012 is xx day, xx months xx years and … |
| | Hello.. I'm doing a project that involves searching/matching 2 matrix's. The basic idea: Matrix 1: 0 1 0 1 0 1 0 1 0 1 1 1 1 0 1 Which will then be interpreted in memory as: 0 1 0 1 0 1 0 1 0 1 1 1 … |
| | I want to get the information downloaded from a file (a BMP image) into a char array. I have this function [CODE] #define _countof(x) (sizeof(x) / sizeof(x[0])) char* DownloadBytes(char* szUrl) { HINTERNET hOpen = NULL; HINTERNET hFile = NULL; char* data = (char*)""; DWORD dataSize = 0; DWORD dwBytesRead = … |
| | Hi, just a quick question. if i have an input file with 6 lines of data. for example(ingnore the numbers 1 to 6, they indicate the file number and is not part of the file physically) 1. Peter 3 / + - * 2. Dahne 8 + - / * … |
| | [CODE] #include <iostream> #include<stdio.h> #include<string.h> using namespace std; int main() { // cout << "Hello world!" << endl; int t,i,j,a,flag; char str[1000001]; cin>>t; while(t--) { a=1; scanf("%s",str); for(i=0;i<=strlen(str);i++) {flag=0; if(!isdigit(str[i])) {flag=0; for(j=i-1;isdigit(str[j]);j--) { if(str[j]!='0') { flag++; a*=str[j]-'0'; //cout<<"flag"<<flag<<" "<<a<<"A"<<endl; break; } } if(flag==0) { a=0;break; } } while(a>9) { if((a%10)!=0) … |
| | I need some help here.. I need an example to do that : ( a background task ) #includes blablalbalbla void?? ExecuteTask () { while(1) { cout << "first " << endl; } } int main () { ExecuteTask( ); while( 1 ) { cout << "lol" << endl; } … |
| | Hello, I am doing simple read/write program for serial port. I am faceing a error that i don´t understand. Error is: "error C2664: 'CreateFileW' : cannot convert parameter 1 from 'const char [5]' to 'LPCWSTR' " My whole program: #include <windows.h> #include <iostream> #include <string> using namespace std; void set_com_pin(bool …  |
| | Is there any C++ .Net IDE's around? I mean visual studio is ok.. it just isn't as good as SharpDevelop which only does C#, VB and a few others. It doesn't do C++ that's why I'm looking for a C++ version of SharpDevelop. Any Ideas? SharpDevelop [url]http://www.icsharpcode.net/opensource/sd/[/url]  |
| | Hello all, i working on a server I have realized that it only is using the loop back address of my ip. It looks like this. [CODE] struct sockaddr_in from; int fromLen = sizeof(from); SOCKET msgSocket = accept(listenSocket, (struct sockaddr*)&from, &fromLen); if(msgSocket == INVALID_SOCKET){ cout<<"Error at accept: "<<WSAGetLastError()<<endl; closesocket(listenSocket); WSACleanup(); … |
| | My assignment is to create the Game of Life. I know that it is very easy to find out how to do this online, but I don't want the answers fed to me. Here's what I have so far: [CODE] // Life.cpp : Defines the entry point for the console … |
| | So i have a program i am writing,and i have come to problem. I want to be able to pass a set of three strings into a function, which should then take them and add them to a Vector. All good so far, now is where my problem develops, how … |
| | What I am trying to do is the following: [CODE] ReceiptBag zero("zero"); ReceiptBag one("one"); ReceiptBag bags[2]; bags = &zero; (bags+1) = &one;[/CODE] Of course that is not valid code. My goal is to be able to reference the same zero or one object by using its variable name or by … |
| | hello, im totally new to this forum, but i already checked whether my ask is answered somewhere else already. i couldnt find anything... i used to work with dev-cpp and i have to work with the cnum.h library a lot. Since im a student i am able to get MS … |
| | Hi Everyone, I am Actually trying to make a simple C++ game in which some random alphabets will fall down and when we press one of those random alphabets keys the aphabet should disappear. The problem that i am facing in making this code is that when i am using … |
| | Hi! I am new to this forum and for c++ also. Can any one tell me the exact difference Createthread,beginthread,beginthreadex........ I have searched many links but not of much use...... Sharath.  |
| | Hi All, Why my QueueUserWorkItem is not at all working. My code is here: [CODE] typedef struct { PCHAR URL[MAX_URL] ; PCHAR DestinationPath ; }MAINDATA, *PMAINDATA ; int main(int argc, char * argv[]) { PMAINDATA pData ; BOOL bQuwi ; DWORD dwIndex ; PCHAR pURL ; pData = (PMAINDATA)malloc(sizeof(MAINDATA)) ; …  |
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| | Hi, can you have a quick look at the two for loops here. I've declared the int 'i' in the first for loop but in the second for loop it doesn't recognise it and i have to declare it again. Why is that? [CODE]for(int i=0; i<x; i++) { cout << … |
| | Hi guys. I am a bit confused among the following three functions. read() readAll() readLine() How do they work? I'll be really thankful to you all. Thanks alot for your precious time! Regards. |
| | hi all, i am working now in code::blocks and dev c++,but in both the cases output is not coming in fullscreen.so,how to view output in fullscreen? thanks in advance  |
 | I was studying for an exam and came across two questions that me and my friends didn't know the answer to. We are given the answer but we just can't figure out what the answer is what it is. First, why does this code give an error? [CODE]int z=5, q=2; … |
| | I am looking for fastest API to read/write files. Can you please help? I have checked such discussions here. But I am not able to figure out from those discussions. Please help. |
| | 1 1 0 1 0 1 1 0 1 0 1 0 1 0 1 How To Print The Above Pattern ?? (Using For-Loops Only) |
| | Here are program instructions. IT SAYS "segmentation fault" WHEN RAN. Specifications You must create a Ship class: The Ship class maintains the position data for each ship/vessel and its distance from another Ship. It has a default constructor, which sets all of the member data to zero, and a non-default … |
| | my problem is that when I try and run it it says 'SortedList' : cannot instantiate abstract class due to following members: 'bool BasicADT::isEmpty(void) const' : is abstract ...and... 'int BasicADT::getLength(void) const' : is abstract can someone please tell me what I am doing wrong with my getLength and isEmpty. … |
| | Hi, i want to write from one file to another. i managed to get the file to write but not in the way i expected it too, there is more to the program but for now i just need to know how can i mirror one file... My input file … |
| | Just studying dynamic memory at the minute. I understand the idea of having dynamic memory for arrays so you can set the length of them within the running of the program. But what is the point of dynamic memory for a single type? If i set an 'int' up to … |
| | Hello, I'm just wondering really.. I have a 2D matrix but I've defined it as a 1D matrix. So for example: [code] double *matrix = new double[N*M]; [/code] My question is, I'm going to be manipulating data very shortly and want to read this data in from a text file.. … |
| | Hello, I joined about 5 minutes back. I need to complete my computer project, which is a hangman game in c++, by today. Based on what my teacher taught me, I have created a code that runs like this- [CODE]#include<iostream.h>//These are the only header files taught. #include<conio.h> #include<stdio.h> #include<stdlib.h> #include<string.h> … |
| | Hello everyone! I'm looking for a free (open source preferred) source code editor. Ideally it would be as light-weight as Notepad++, gedit, kate, mousepad, you see the pattern. However, the most important thing I'm looking for in this editor is flexible, dynamic, intelligent autocomplete (for c/c++). To be fair, Notepad++ … |
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