51,593 Topics
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| | hi im new to daniweb im currently working on a piece of work. the idea is to create a bank account with deposit and withdrawal functions. create student business and current accounts (this is all roughly done and a case of copying and pasting for each account type with a … |
| | Hi, I was told that you can crash Windows in C++ or C by "corrupting the kernel", and I wanted to know if this was actually possible. If anyone knows if this is possible, or how it happens, please tell me. ;)  |
| | Hello everyone. I need help using an instance of a class in another. Below are two header files. NumDays.h and TimeOff.h I need to have instances of the NumDays class in the TimeOff class as members. When i try to create the instance called maxSickDays, i do not get access … |
| | OK, I'm making a backup application and once the backup is complete, I want it to flash FINISHED!!!! - in different colours - any help at all would be appreciated, thanks - MaxICube |
| | I am creating a linked list which links a struct of data together. However, this is my problem, if I declare struct Node first then the Event type wont exist, but if I declare struct Event first then nodePtr wont exist....im kinda stuck here as to how I should declare … |
| | I am having a problem with a program. I have to create a program with about 8 different functions. Which reads in votes, finds the max, the min, prints the votes, prints the max prints the mid, finds the normalization, outputs how many are below .25 and above .75 and …  |
| | hey there , Im taking C++ courses in my collage (so ım a newbie) and they are teaching programing language a bit different from the examples in this forum. [code=c] #include <stdio.h> int main (void) { int x; int y; int z; int min; printf("enter 3 numbers : "); scanf("%d …  |
| | [code] void writingTransactionToFile(string transaction) { string temp; int test; ifstream myfile("transactionlog.txt"); ofstream tempfile ("tempfile.txt", ios::app); if (tempfile.is_open()) { tempfile << transaction; if(myfile.is_open()) { while(!myfile.eof()) { getline(myfile,temp); cout << temp; tempfile << temp << endl; } } else { cout << "Unable to open file."; } tempfile.close(); myfile.close(); } else cout …  |
 | I have had this problem a couple of times but i am unsure of what it means. could someone tell me what the error message "non-lvalue in assignment" translates to in english, please? |
| | I decided to learn the template any how.... but... Each level is giving me the trauma staring up with the domino one after another.. please help.... Problem is I use both printf(); and cout<< for the console output... now the problem lies that i can't just leave one of them.. … |
| | [code=cplusplus] #include <iostream> using namespace std; int CelsiustoFahrenheit() { float celsius; cin >> celsius; float fahrenheittemp; fahrenheittemp = celsius * 1.8 +32; }; int FahrenheittoCelsius() { float celsiustemp; float fahrenheittemp; cin >> fahrenheittemp; celsiustemp = (fahrenheittemp-32)/1.8 ; }; int main() { int choice; float celsiustemp,fahrenheittemp; cout << "1.Celsius to Fahrenheit" … |
| | I have been writing a Loan Program that requires at one point to read a .txt file and create an array from the contents. This part is nothing new to me. The problem I have is a single line of code and I cant figure out how to make it … |
 | Hello Developers! I have been searching for long lame binding for python and have no way but need to learn ctypes to use lame_enc.DLL. For Now I need simple DLL with simple functions to play with. My Question is: Where can I get that simple yet safe DLL to play … |
| | Hi all i am working on a memory game and i am having problems inputing the data so it checks if a 3rd number is pulled up to ignore it thanks in advance [CODE]int card[6][6],total=0,value,test; srand((unsigned)time(NULL));//randomize timer for (int i=0;i<6;i++) { for (int j=0;j<6;j++) { value=rand()%18;//random test=0; card[i][j]=value;//sets the value … |
| | Write a program that calculates how much a person earns in a month if the salary is one penny the first day and doubles each day worked. [B]The program should ask the user for the number of days worked during the month[/B] and should display a table showing how much … |
| | I have absolutely no clue why the following code works except for the following three characters: ç, à and è. It should rule out all non-digit characters from being written into an edit control. Because it let's those three pass trough I am forced to turn this: [code=cpp] if(!isdigit(editControl_Content[2])) [/code] … |
| | I have been writing some quicksort code and testing it on integers and all seems to be going well. Now I'm trying to use my code to read in words from a file and quicksort them. I tried using my quicksort on an array of strings but that did not …  |
| | Hello, I'm programming in C++. Is it possible to have a private data member of type class X within the definition of class X? For example, [code] class X { ... private: X m_member; ... } [/code] I'm pretty sure it's not possible, but I appreciate any feedback. -price  |
| | i have created my code.But my division is not working for longer number.CAn anybody solve this. [ICODE] #include <iostream.h> #include <string.h> #include <stdlib.h> #include <sstream> #include <iomanip> using std::setfill; using std::setw; using namespace std; void subtract (struct head *oprnd1, struct head *oprnd2, struct head *result); void add (struct head *oprnd1, … |
| | hi i want to create huffman binary code which tales string as a input,identify Identify the set of characters appearing in the input string. Count the frequencies of these characters. According to these frequencies, generate a Huffman binary code .I have to do this in c++ using cursor.I dont knw …  |
| | Here is my code, I want to get the coordinate of the mouse position: [code=cplusplus] #include <iostream> #include <string> //#include "WinDef.h" //#include "stdafx.h" #include <windowsx.h> #include <windows.h> #include <atltypes.h> using namespace std; int main() { DWORD pos = GetMessagePos(); CPoint pt(LOWORD(pos), HIWORD(pos)); ScreenToClient(&pt); return 0; } [/code] But I could … |
| | Hi there, new to the community and first of all just wanted to say its great to be here. I'm rather new to C++ and i was having an issue perhaps someone could clear up for me. Alright, our instructor for a class im taking would give us simple programs … |
| | Implement a recursive template function for the 2-way Mergesort algorithm. A Main program is provided that tests this function. Can anybody help me out with this question? this is the main function [code=cplusplus] #include <iostream> #include "Student.hpp" #include "MergeSort.cpp" int main() { const int n=10; { Student A[n]; Student tmpArray[n]; … |
| | Hey! We have to write a function that deletes nodes from a linked list. I was wondering if you could tell me if this is correct, and if not, how I could fix it? [CODE]void delNeg(node * L) { node *cur = L; node *prev = NULL; while(cur != NULL) … |
| | [B]I have to read a file (for a string) and the file is available only at the compilation time, not in the run time. Is there any possibility to read the file during compilation and initialize a variable with the value read from the file. I have tried different methods, … |
| | I'm new to c++ like most people here, but i'm trying to learn to do C++ if one of my courses and its not going well (been given 6 powerpoints to go by). Ok so to the questions: Using Dev-C++ for programming and whenver i put in a number wrong … |
| | I am trying to create a Space Invaders sort of game. I am using a linked list for the bullets that the player shoots and in the same list, there is also the enemies. I have a addNewEnemy Function which I run once in the main game loop. This adds … |
| | Hello, I work on a problem and I want my solution to be picked from discrete numbers.( I want a value for diameter and I want it to be selected from the available diameter values) Does anyone know it can be done with C++ and how? Thanks |
| | i have a major problem with my c - media ac97 audio device. my computer crashed and ive just recently rebooted it but now i cant get the sound to work. ive tried to install the driver for the speakers but it doesnt seem to work. everytime i try to … |
| | Hello. I am currently having problems. I am asking a user to input the position and number of where they would like to insert into the Linked List. After the user input the information, the number does not appear in the Linked List, but everything else does. Can someone help … |
| | Hi, How to insert a combox to a column of list ctrl in MFC?....such tht i can select a particular item from a list of items in the combo box of list ctrl column....plz help  |
| | Hello. I'm having problems in 2 different functions: GetNth() and InsertNth() 1) For my GetNth() function, I want to take my linked list and an integer index and return the data value stored in the node at that index position. For example: {42,13,66}, the index of 1 should print out … |
| | How do you exit a sentinel controlled loop forcefully ? [code]while (finalstar != word && ct1 < 7) { let_pos = word.find(letter); if (let_pos != string::npos) { get_letter = word.substr(let_pos,1); new_letter = finalstar.substr(let_pos,1);// gets star from string made of stars new_letter = finalstar.replace(let_pos,1,letter); cout << "Right !!" <<endl; ct1 = … |
| | I am trying to solve a tricky problem involving a sorted array. Say I have an array of sorted integers (8, 6, 4, 1) and given the value x I need to check the array to see if any two numbers add up to x. This needs to be done … |
| | [code]void decryption() //this function decrypts whatever the user inputs using keys 1 - 100, providing all possible decryptions { const int MAX = 100; string code, output; char array[100]; cout << "Enter what you would like decrypted" << endl; cin >> code; //herein lies the problem strcpy(array, code.c_str()); for (int … |
| | im writing a simple program that turns a decimal to hex. im only posting the piece of code where i have the problems [code] string hexnumeral (int d) { int h,l; string e,y,f; if (d < 16) return hexdigit (d); else { f = d / 16; h = d … |
| | Hi, I am writing output to a file and am using ostream. I wanted to format my output and not sure how to do it. Here is some simple code. [code] int var1; int var2; ofstream out("blah.txt"); out << "Name " << var1 << endl; out << "NameofAnotherPerson << var2 … |
| | Hey guys, I'm having a problem with my checkers program; whenever I move the piece, it redraws the whole board and basically puts the piece back into its original position. The code is attached to this post. Thank you for your help! |
| | Is there a way to Alt-F4 programatically. It will be used to close another programs window that opens wich is the topmost form on the desktop. |
| | Ok, so I've been working on this code for a day now and i thought I had all the kinks worked out, but my program isn't working right. I'm writing this code to simulate a game (basically a simulation of a simulation) used to illustrate some topics we are trying … |
| | please help me with this Assignment: Write a program that will read the critical path information from the attached file (ProjectInfo.txt) into 3 arrays, events, tasks and numDays and defines a 4th array called eventNumDays in which you will calculate the number of days needed for each event to complete, … |
| | I am a bit confused. I am trying to make a program that will take the choices you make and display them all simular to this: Item 1. Sword Item 2. Shield Item 3. Potion Item 4. Potion but when I try to run it it looks more like this … |
 | Hi, everyone. I am doing a performance test on the heapsort. I wrote this program and it has a run-time error that I cannot explain. I am compiling on Microsoft Visual Studio 2008 and this is the error. HEAP CORRUPTION DETECTED after Normal Block ... well, I think that the … |
| | I'm really not understanding what's going on with the array in this. Here's the question. The following code totals the values in each of the two arrays. Will the code print the correct total for both arrays? [code] int total = 0; int count; for (count = 0; count <= …  |
| | Here is my code I'm pretty sure the problem has to do with using namespace std and the included header files but I can't figure it out (error string no such file or directory in .h, error iostream no such file or directory in .h,error syntax error before namespace) box.h: … |
| | Main.cpp This is where the problem lies. [code] #include <iostream> #include <time.h> #include <math.h> #include <iomanip> #include "LinkedList.h" #include <fstream> #include <string> using namespace std; void main(void) { LinkedList Customers; Customer* newCustomer; Entry* test; int i = 0; newCustomer = new Customer(1001, "Olly", "07/10/1988", "17 Bob Lane", "Hobbs Road", "UB3 … |
| | Hi Have written this code for a program that requires the user to either enter 1 or 2 dependant on whether the program solves the problem of finding the divisors of any given to numbers by recursive or iteration methods. [code] #include<iostream> using namespace std; int recursiveGCD(int ,int ); int … |
| | Please help me. I have to read CVS Tag of a file or directory from C++ program in LINUX. Any small idea is also welcome. Thanks in advance. |
| | Okay, I cannot figure this out. I still get the same error: [QUOTE]Error 1 error C2039: 'function' : is not a member of 'D'[/QUOTE] Here's what I have: Class A.h: [CODE] #pragma once #include <string> using namespace std; class D; class A { public: void function(string s); friend class D; … |
| | Hi: I need some assistance in this code. I am trying to get this format. 1 .2 ..3 ...4 and so on.. i dont get any errors in the code but i get no o/p eitehr [code] #include<iostream.h> int main() { int i; cout.fill('.'); for(i=i;i<10;++i) { cout.width(i); cout.fill('.'); cout<<i; }}[/code]  |
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