49,766 Topics
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| | 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 …  |
 | 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?  |
| | How does an array variable indexing expression differ from an array definition size expression? |
| | 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 … |
 | 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 …  |
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