49,761 Topics

Member Avatar for
Member Avatar for olams

Hi, i am writing a program to manipulate polynomials. however, i am having problems with my root function. this function is meant to find the real roots of a polynomial using newton-raphson formula. please help me. [code] #include<iostream> #include <sstream> using namespace std; //A class to handle a list node …

Member Avatar for iamthwee
0
118
Member Avatar for glendavis

This is supposed to return the index of the first empty string in the array using recursion. Instead of returning the index of the FIRST empty string, this function I wrote returns the index of the LAST empty string. I have no idea how to search from the beginning of …

Member Avatar for VernonDozier
0
171
Member Avatar for noulmail2007

Hello, I need an email extractor which can extract me the email address from the specified ebay user I need.To give you a clue here is what I need.On ebay you know every user is registered with an email address but lately you cant view their email address.If any can …

0
43
Member Avatar for afg_91320

hello ive been working on this project for the past couple of days, and i keep on getting the same error. it tells me that the term will not evaluate a function with two arguments. please help me! thanks [CODE]#include <iostream> #include <cmath> using namespace std; int main () { …

Member Avatar for vmanes
0
81
Member Avatar for olams

hi, i wrote this program on polynomials and how to manipulate them. however, i am having a problem with my eval function. it is supposed to evaluate the polynomial at a particular number. however, whenever i call a.eval(2.0), i keep getting polynomial a. please help me look into this. [code] …

Member Avatar for olams
0
149
Member Avatar for kako13

Hi, I'm getting this error: Asig 2.cpp In function `void ManiMatrix()': 31 Asig 2.cpp expected primary-expression before "int" Asig 2\Makefile.win [Build Error] ["Asig 2.o"] Error 1 Here is how I'm calling it from main: customMatrix.checkIfMagic(); Prototype in the class: void checkIfMagic(int**); void matrix::checkIfMagic(int **arrayOfArray) {// function began } // function …

Member Avatar for kako13
0
151
Member Avatar for Gopala Krishnan

when i use a dynamic 2d char array using pointers, i dont get any errors but the program is not executed correctly... //Pro to enter and display strings using dynamic 2d char array. [code=c] #include<iostream.h> #include<conio.h> void main() { char **v; int s; cout<<"Enter size :: "; cin>>s; v=new char[s]; …

Member Avatar for VernonDozier
0
99
Member Avatar for atish00

Can anyone help me wiht the prog. arrange a 1D array in ascending order. No need for the prog. code just explain me the logic.

Member Avatar for Lerner
0
140
Member Avatar for noellieb

Hi all, i am trying to do a quadratic hashing but i am having some difficulties probably because i am not in the right logic.using this code: [CODE] #include <iostream> using namespace std; int find(int); void insert(int); const unsigned int size = 13; int load = 0; // number of …

Member Avatar for Narue
0
818
Member Avatar for sanzle

i am trying to pair a vector and an integer but [code] map<vector[i][j],int>m; m.insert(pair<vector[i][j],int>,(v[1][0],sum)); [/code] did not work??

Member Avatar for HackWizz
0
56
Member Avatar for nurulshidanoni

I want to do two-dimensional array.. STUDENT1 take 001, 003, 005,006 STUDENT2 take 005, 007, 009, 001 001 002 003 004 like this 001 0 2 1 .... 002 003 004 and I do a programming like below, but how to fill inside the { }? [code=c++] // -------------------------------------------------------------- // …

Member Avatar for Ancient Dragon
0
117
Member Avatar for narendra_jntu

Hi all Recently i started using dev-C++ 4. I dont know to work with dev-c++. Plz tell me how create c++ programs and running them. I am trying to explore the dev-c++ ide , but no use. so plz somebody tell me how to work with dev-c++. (If possible tell …

Member Avatar for Ancient Dragon
0
76
Member Avatar for LoloftheRings

Hi, I created an object to create buttons in console applications. But somehow, the program doesn't do much when it's checking if the button is clicked. I got this code from the internet, I could give the original code if you want to study it. I have stripped it down …

Member Avatar for LoloftheRings
0
518
Member Avatar for VersEtreOuNe

[B][COLOR="Red"]Value.h[/COLOR][/B] [code=c++] #ifndef VALUE_H #define VALUE_H #include <iostream> template<typename DataType> class Value { public: Value(DataType val); Value(const Value<DataType>& aValue); Value& operator =(const Value& aValue); Value& operator +(const Value& aValue); void SetValue(DataType val) { _value = val; } DataType GetValue() const { return _value; } template<typename DataType> friend std::ostream& operator <<(std::ostream& …

Member Avatar for VersEtreOuNe
0
113
Member Avatar for TheBeast32

Hi, i have been making a server for a client I made to connect to. I don't have a static IP, so I need a way for someone on another computer to connect to me without me telling the user what it is every time. I have tried to just …

Member Avatar for TheBeast32
0
95
Member Avatar for guitarrick

Desperately need help on how to proceed with the following project: Design and implement and ADT that represents a calendar date. Month, day, and year . Type int is o.k. e.g. 03/08/2008. Include operations that advance date by one day and display the date by using either numbers or words …

0
66
Member Avatar for sjcomp

Hello, I have a vector of callbacks and I'd like to execute them. This is what I do: [CODE=C++] typedef boost::function<void (void)> FCallBack; std::vector<FCallBack> c; // Execute every callback std::for_each(c.begin(), c.end(), boost::bind(&FCallBack::operator(), _1)); [/CODE] This works, but is there an easier way to do so? For some reason reference to …

Member Avatar for vijayan121
0
105
Member Avatar for blcase

i am trying to overload subtraction between two separate classes. Class Id is basically several strings such as the information of a voter database. Class Collect would be the collection of several class Id's in an array along with a total of Class Id's and the title of the collection …

Member Avatar for John A
0
143
Member Avatar for charles_wt

I have borland C++ compiler on my system.while generating random numbers in C++,though i have incuded #include<cstdlib> and #include<iostream> i get these errors 1.cannot open include file cstdlib 2.call to undefined function rand please help me with a solution

Member Avatar for WaltP
0
313
Member Avatar for Darth Vader

Hello everyone. I have attached a folderBrowserDialog1 to my Form1. To a button I will do a function. What I will do now is when I press the button, I want to open this folderBrowserDialog wich works fine. After this I will click on a folder wich contains *.txt Files …

Member Avatar for Darth Vader
0
233
Member Avatar for VersEtreOuNe

Hi. Need to know what's the difference when using Templates between: [inlinecode]template<class T>[/inlinecode] and [inlinecode]template<typedef T>[/inlinecode]

Member Avatar for VersEtreOuNe
0
247
Member Avatar for sgw

Hi, I'm trying to use the pow function. Extremely simple program like the following, but it never passed compiler: #include <iostream> #include <cmath> int main() { int a, b, c; a=2; b=3; [COLOR="Red"]c=pow(a, b);[/COLOR] cout << c; return 0; } Compiler would highlight the red part. What's wrong?:icon_rolleyes: Thanks in …

Member Avatar for sgw
0
648
Member Avatar for kartouss

[code=c++] // Input the plaintext in the array char d; string temp; ifstream myfile1 ("Plaintext.txt"); if (myfile1.is_open()) { do { for ( j=0; j<BC; j++) // BC=4 for ( i=0; i < 4; i++) { myfile1.get(d); a[i][j] = d; // plaintext } Encrypt(a, rk); /* strcpy(temp,a); // Code to write …

Member Avatar for kartouss
0
151
Member Avatar for abhi_elementx

Hi, I am using dev c++ 4.9.9.2 and I am new to DLLs. I am tryig to create a DLL which I am not creating thru the "DLL project" in dev cpp. Here are my three files: //dlltest.h [CODE] #ifndef _DLLTEST_H #define _DLLTEST_H #ifdef BUILD_DLL #define EXPORT _declspec(dllexport) #else #define …

Member Avatar for Duoas
0
164
Member Avatar for LoloftheRings

Hi, I've made a console Pong game. I've added some sounds but the sounds are about 10 external .wav sounds. It seems a bit like a mess when I send the game to somebody, and it's not really user friendly. I want these sounds to be included IN the .exe …

Member Avatar for Duoas
0
254
Member Avatar for Undertech

(Note: sizeof(character) == 68 bytes) I am having issues with fstream::seekg()/seekp(). It seems like when one is invoked to modify the get or put pointer, the other pointer follows it instead of staying in place. Example: [CODE=cplusplus] charfile.seekp(0,ios::beg); cout << endl << "Put pointer is at " << charfile.tellp() << …

Member Avatar for vijayan121
0
194
Member Avatar for sadaka

Hello all. I just recently started a project using directx for a paint program. I am new to directx programming and have not before program with it. The codes that I entered are the typical codes but with modifications to handle directx programming. They compile and link with out error …

0
42
Member Avatar for arby11886

I need some guidance on an assignment I'm working on for school. The objectives of this assignment are to read data from a binary file, use some basic class functionality, store objects in an array and produce a neatly formatting report. [code] #include <fstream> #include <iostream> #include <cstring> using std::ifstream; …

Member Avatar for WaltP
0
93
Member Avatar for jrkeller27

I am writing a simple program that reads in a plain text file (ignoring numbers/symbols) and stores each unique word and the frequency it appears in the text file. This information is stored in a multimap<string, int>. I want to sort the elements in the multimap so as to facilitate …

Member Avatar for vijayan121
1
115
Member Avatar for sjcomp

Hello, I have base class and a derived class if I want to use bost::bind in an algorithm to call a virtual function that is declared in the base class I have two options: [CODE=C++] struct Base { virtual void Go(){}}; struct Derived:Base { virtual void Go(){}}; Derived d; // …

Member Avatar for vijayan121
0
111

The End.