51,593 Topics
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| | I am having a problem when trying to delete specific record from a text file. Data structure is as follows: typedef struct { char id[9]; char name[50]; float amount,price; }PRODUCT; typedef struct id { char key[9]; int address; }ID;//for searching typedef struct node { ID id; struct node *left,*right; }NODE; …  |
| | I am having trouble figuring out an efficient way to perform the checks for how a winner is determined in a 3D tic tac toe program (that is 3x3x3). Winners can be three spaces in any vertical, horizontal, or diagonal, including those between the 3 "boards." There are over 50 … |
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| | I have to create a random matrix m*n where m and n are user inputs. Now i have to fill the matrix with random nos. Finally I must have a matrix where each value is either 0 , 1 , a fraction no between 0 and 1, and also sum …  |
 | Everything I have found shows how to add a row to a database for new images... I am trying to update an existing row with a longblob field to store a logo and cannot seem to grasp what to do Any help would be greatly appreciated |
| | how to do this? write a c++ program that given the name of a text file reads that file and counts the number occurrences of each alphabetic letter in the text. treat upper and lower case instances of a letter as the same letter. hint: look up tolower()---testing the case … |
| | Can anyone please tell me what is the problem in my code: void Laptop::show() { Computer::show(); cout<<"weight is="<<weight<<endl; cout<<"height is ="<<height<<endl; cout<<"length is ="<<length<<endl; cout<<"width is ="<<width<<endl; } I am unable to call Computer::show(); function in Laptop::show(); function.Compiler says to use . or -> operator i am unable to understand. … |
| | Exercise Three: In this exercise, you will create a program that gets two numbers from the user and checks to make sure the first number is less than the second number. It should then display the sum of the even numbers between, and including, the two numbers entered by the … |
| | I am trying to create a method entitled rolledOneOnlyOnce that takes in two integers as parameters and returns a Boolean. This method must be public and static. In this method, the integer parameters represent the values currently on each of the Game’s die (die1,die2 respectively). Here, you will want to …  |
| | hi i got a bank account project and i dont know how to figure out this problem i need to be able to transfert money from checking account to saving account if someone can help me with an exemple ,because i am a bit lost thanks by advance |
 | This is a program for Encryption and Decryption This program uses the Simple Data Encryption Standard (SDES) Algorithm. This Algo takes 8-bits of plaintext at a time and produces 8-bits of ciphertext. It uses 10-bits of key for Encryption and Decryption.  |
| | char patron10(int m , int n ) char patron10(int m , int n ) { for ( int = 0 ; i < m ; i++) cout<< "." ; int a = 0 ; while (True) { cout<< 10*a ; if (10*a >= n) break ; for ( int i …  |
| | Hi, I'm working through the 3rd chapter of Thinking in C++ Vol 1 by Bruce Eckel (free online). I am using Code::Blocks as my IDE. I've try searching for this problem through the forum but haven't found a solution; I think it might be a IDE-specific problem. The undefined reference … |
| | Using an initialization list for a class array variable, what do you use to setup a slot with a 3parameter Ctor?  |
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| | The following is a similar program I had when having trouble: float x; int n=0; cout << "enter some numbers separated by space; enter 1.2 when done: "; cin >> x; while (x!=1.2) { n++; cin >> x; } The problem is, when using certain numbers as the sentinel (in …  |
 | Linux Mint 17 I have recently download the SFML library but I don't know where to put the files. There is a lib directory and an include directory. The lib directory appears to have a lot of sym links in it. garrett@mint-desktop ~/Desktop/SFML-2.3.2/lib $ ls -l total 904 lrwxrwxrwx 1 …  |
 | i'm trying getting the richedit caret positions. seems that i can't use the caret functions. LONG firstCharIndex(HWND hwnd) { POINT pt; pt.x=0; pt.y=0; LONG n = SendMessage(hwnd, EM_CHARFROMPOS, 0, (LPARAM)&pt); return LOWORD(n); } COORD GetCaretPos( ) { COORD pos; //getting the line from caret position: pos.Y=(LONG) SendMessage(consoleedit, EM_LINEFROMCHAR,(WPARAM)-1,0); CHARRANGE cr; … |
| | I'm in the process of designing a console personal/business finance package for Linux. It's easy to identify the advantages of data abstraction through classes, but I'm not inclined to become proficient with STL or containers. Exception handling may become a consideration, but definitely memory allocation via "new". My own implementation … |
| | 0 down vote favorite I'm using Wireshark packet analyzer & when I filter for all "Websocket" packets I see what I am sending /receiving to the host. When I check individual packets mine always show as [MASKED], but you can 'Umask Payload' which shows the data in clear text that … |
 | Can someone tell me the formula codes of how to 1 find and write the total number of massive elements om massive number(random massive numbers) 2 find and write the biggest random massive number(random massive numbers) 3 find and write the smalles random massive number(random massive numbers) 4 how to …  |
 | I know the dos command is "shutdown" then with your parameters of "-s -t xxx" etc. Anyways so "How to shutdown your computer using C++?" Thanks, Regards X |
| | I really need help creating this program, i am not very good at coding and you all would be a blessing to help me. Thanks in advance! Assignment Create an Aircraft class that has several properties that are common to all aircraft (Ex: number of engines, seat capacity). You define … |
| | Define an int array variable named arx with 3 slots, and stuff a 7 in the last slot int arx[2]=7; or is it: int arx[3]; arx[2]=7; Is this correct? |
| | I am off to a rough start with this program, I have attempted with my best effort, but I am still lost on what I am supposed to do. The program description with sample input and output and my attempt code is below: Program Specification: Build a hash table using … |
| | how to populate/add & read values to this map?. typedef map<string, map<string,map<string,vector<int>>> > myNestedMap; The combination Key1+key2+key3 is unique. |
| | **Well guys , i have a problem , i have got my linked list , it add numbers (to the list) , and show numbers(from the list ) , but i can´t add the numbers of the list , i really need help , if the list would be: 1) … |
| | When I try to compile the program below in Eclipse I get two erros, ‘const class Fraction’ has no member named ‘n’ & ‘const class Fraction’ has no member named ‘d’ When I compile it on the command line with g++ -Wall FloatFraction2.cpp Fract7.cpp -o FloatFraction I get more errors … |
| | C++: I'm using Microsoft Visual Studio 2012 and I am not sure what to do about these two errors: 2 IntelliSense: identifier "x" is undefined Error 1 error C2065: 'x' : undeclared identifier Prompt: Make program that reads 20 integers, display that array, and find min, max, sum, and avg. … |
| | C++: I'm using Microsoft Visual Studio 2012 and I am really confused and am getting errors. Prompt: Make program that reads 20 integers, display that array, and find min, max, sum, and avg. One method named "read from user file" which will ask the user to input a filename and … |
| | In my deisgn I have three classes derived (Der1,Der2,Der3)from a common class (Base1) in 2/3 of these classes have same implementation forvirtual function f1(). i.e f1() shares same implementaion for Der1, Der2 . and NO IMPLEMENTATION for Der3. so I kept f1() implementation in base class Base1, and in Der3 … |
 | First off, happy thanksgiving everybody. Second, my program has problems. I've discovered a horrible way (for me anyway) to design and my attempts to fix it aren't getting any where. I have to design a roman numeral calculator (input romans, output romans) with at least two functions (decimal->roman, roman->decimal). I … |
| | Hi everyone I need help with something i get this error fatal error C1075: end of file found before the left brace '{' at 'c:\documents and settings\navideeah\desktop\maplestoryserver\maplestoryserver\mapleisland.cpp(350)' was matched and i get the error around here [code=cplusplus] void NPCsScripts::npc_22000(NPC* npc){ int state = npc->getState(); int map = npc->getPlayerMap(); if(npc->getPlayerMap() == … |
| | I've created a program that reads lines from the text file. Each line is parsed to find a command and parameters that are executed. So, the essential code goes something like this: while (getline(script, scriptline)) Parse Scriptline Execture Scriptline Function This works very well for most functions. Until I get … |
| | How would i fix the search function? AVL.h: #pragma once #include<iostream> #include<stdio.h> using namespace std; template<class T> struct TreeNode; template<class T> class AVLType { public: AVLType(); void InsertItem(T item); void Insert(TreeNode<T>*& tree, T item, bool & taller); void RotateLeft(TreeNode<T>*& tree); void RotateRight(TreeNode<T>*& tree); void RightBalance(TreeNode<T> *& tree, bool & taller); …  |
| | Dear All, I am trying my hand at a hand writing recognition tool. I managed to find a database of numeric characters on the internet; [http://www.codeproject.com/Articles/16650/Neural-Network-for-Recognition-of-Handwritten-Digi] Does anyone know of or have (and willing to share) or lead me to a database of alphabetical hand writing characters ? As always, … |
 | I need to interface to a USB device from VB.net, where I both read and write to the device. Are there any programing differences between the different USB interfaces, i.e 1,2 and 3 that I should be aware ? Does it matter if say a USB 3 device is plugged … |
| | Hi there, I am stuck in a problem in which my function rounds off a decimal point number upto 4 decimal place and return a 0.0000 number. But when i compare this returned number to 0 it did not return true in if condition. Please check my code below and … |
| | I had created my Qt C++ application and now I am thinking to provide it as a plugin or as library in Eclipse. I know there is CDT plugin, but I don't won't to write my code again. Is there any way to achieve this? Snippet for QPushbutton in qt … |
 | Hey Everyone, I'm doing a little test for a presentation I'm giving on Tuesday. I wanted to show the performance difference between VB2008, C# and C++. To do this, I have three programs. Each program performs the Fibonacci sequence X times, and can either do it iteratively or recursively. As … |
| | Hey guys!! I have my semester Project on Libaray database and they asked me to bring Class diagram of the project. Its just that i am confused how to make that ? Can anyone help me in that or give me an example of that |
| | please help me for making this project you guys is my only hope <3 |
| | **Bold Text Here**I am trying to make a generic linked list . below is the code for linkedlist . #ifndef GenericLinkedList_h #define GenericLinkedList_h #include <iostream> #include "GenericLinkNode.h" //class GenericLinkedList; template <typename T> class GenericLinkedList { private : GenericLinkNode<T> *head; public: GenericLinkedList(); void traverse(); bool isEmpty() { return head == NULL … |
| | I am wondering if it is safe to debug a c++ code on my website? If theres an article that talk about that pls. post the link together with your reply. Thank you :) |
| | how can i resize a window console buffer? i know that i can use the SetConsoleScreenBufferSize(), but i'm getting problems convert from pixels to characters, because the vertical scrollbar is showed and the size isn't changed correctly, because it's more big than the buffer size: CONSOLE_SCREEN_BUFFER_INFOEX consolesize; consolesize.cbSize=sizeof(consolesize); GetConsoleScreenBufferInfoEx(hConsole,&consolesize); COORD … |
| | Hi everyone, Please check my code below and tell me that why double stores number upto 3 decimal places ? #include <iostream> using namespace std; int main() { double dNo; dNo = 363.430965; cout<<"double no : " <<dNo <<endl; //cout only outputs dNo value upto //3 decimal places return 0; … |
| | Hi Guys The thing is that i was asked to make a libaray database managment software for my semester project which i did but now my teacher is asking to give that same project in OOP and i am really bad in that.Can anyone change my program into Object orientied … |
| | Hello everyone, I have a shool project that requires me to design a cash register class that uses an inventory class and the cash register should perform the following steps: 1. ask the user for the item and quantity purchased. 2. get the item's cost 3. add 30% profit to … |
 | Hi all, Im currently working on a c++ program for school, and I thought it would be nice If i framed the output from a function. I looked all over the web to find a solution to no avail. Im completely stuck. I keep getting 2 errors: *154:35: error: expected … |
| | My c++ program using visual studio 2012 has one error that i cant figure out what. The error says " 1 IntelliSense: expected a ';' " I do believe that the eror from my program is after this part: cout<<"\n @@@@@@@@@@@@@@@@@@@@@@"; cout<<"\n @@@@ @@@@"; cout<<"\n @@@@ @@"; cout<<"\n @@@@"; cout<<"\n … |
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