51,593 Topics
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| | I am trying to use a linked list to read in data, do calcuations and then display it. I am new to using linked lists, so right now I'm only trying to display them to see if it works. [CODE]#include <iostream> #include <fstream> #include <iomanip> #include <list> using namespace std; …  |
| | [CODE]#include<iostream> #include<conio.h> using namespace std; class base{ public: base() { cout<<"base constructor"<<endl; getch(); } virtual void out() { cout<<"I AM BASE"<<endl; getch(); } }; class derived : public base { public: derived(){ cout<<"derived constructor"<<endl; getch(); } void out(){ cout<<"I am derived"<<endl; getch(); } }; int main(){ base b,*bp; derived d; … |
| | Hello, I am new to C++ programming. Till now I have done some toy programs and classroom exercises. I want to develop a Virtual Drive software like PowerISO/Magic ISO. I searched Daniweb but couldn't get a thread where such problem was discussed. So from where should I start to develop …  |
| | what is the step by step procedure to make your program run... using c++ |
| | Okay the text on my input file is Wxmv_bpm_xwl_jig_lwwza,_PIT._Q'u_awzzg,_Lidm._Q'u_inziql_Q_kiv'b_lw_bpib. Here's My code but for some reason I can't get my program to convert the message to my output.txt file. Can someone please help thanks [CODE] #include <iostream> #include <fstream> #include <cstdlib> using namespace std; int main() { string str; int … |
| | I'm want datagridview display numeric only for certain column. eg: column is store length. data will display 25mm. Now I'm want show 25 only in datagridview column.  |
| | I have written a code but I am getting run time error : I have introduced all the error functions , but no error comes . Debug it with gdb which says : Starting program: /home/sudhanshu/OpenGL_ES/example/cube/cube [Thread debugging using libthread_db enabled] Program exited normally. What is the problem I am … |
| | I created a program that ask a user to pick a service package and tell them how much it is going to cost, what i cant figure out is how to get the program to tell them how much they would have saved if they had gone with a different …  |
| | I am writing code where I have three header files: figure, triangle, and rectangle. Triangle and rectangle classes inherit the figure class. I have all the functions defined in the class declarations and don't need an implementation file. When I compile, I get this error: error C2011: 'Figure' : 'class' … |
| | Im trying to complete exercises out of a c++ book that does not provide solutions. The first part was to just ask for internet package choice and output the cost of it as well as any additional fees. The part im having trouble with is: "Modify the program to show … |
| | I need help I have tried three times to make this program work and every-time I get more and more confused. Write a program that performs a threshold filter on a sequence of one-dimensional data. A threshold filter replaces values in an array with preset constants based on whether the … |
| | Okay I need to create this Program and I have no Idea where to start. you will write a program that performs a threshold filter on a sequence of one-dimensional data. A threshold filter replaces values in an array with preset constants based on whether the values are in the …  |
 | Ok so I am stuck it's homework so I am not looking for anyone to do it for me i just need some help getting my mind on the right track. what i am doing is pretty much having the user enter a string of "$234,324,324.66" and have it print …  |
 | hi, how would you get a certain part of code to run while the program is waiting for the input? [CODE]string in; int n1 = 0; n1++ // get this part of code to loop while the program is waiting for the input cin >> in[/CODE] thanks. |
| | Hey guys, Just wondering if you could assist me quickly with some validation. I have some strings in for the format: MM:SS.mm Where MM = Minutes, SS = Seconds, mm = Milliseconds. I'm just wondering whether you can help me with how to validate to ensure an input string is … |
| | I want it to list prime numbers from 1 to 100 like this: 1. 1 2. 2 3. 3 4. 5 5. 7 etc. [CODE]#include <iostream> using namespace std; int main(){ int num = 1; double number = 1; double div = 1; bool prime = true; int top = … |
 | Anyone know of a generic guide for using third party C++ libraries, specifically with Visual Studio 2010? I'm thinking "winging it" isn't cutting it, I want a resource to learn more about how these things are usually prepared, and used. I swear I saw a mention of a library system … |
| | hi my friends i have project.& I have to do it untill saturday(18 july 2011) please help me :( in this program should be read text file & show it And percent occurrence of each letter is displayed(no diffrent between capital or small letter .example :a=A) The number of words … |
| | If anyone could help this humble learner I would deeply appreciate it, Im trying to put this whole function, the couts in the middle but gotoxy() on a console application doesnt seem to work, im on windows vista and using codeblocks the latest version, Maybe I have a library wrong … |
| | Hi! I am using Dev-C++ and when I am trying to compile a program in it, it is showing many errors. All the settings seems to be right. Can I compile a program including header files like conio.h and iostream.h and using namespace std in Dev-C++? If not please suggest …  |
| | [CODE]#include <iostream> using namespace std ; int main() ; { score and grade // declare variables ; float total_score // total weigted points ; char grade // letter grade ; int A , B , C , D , F ; // read in total score ; cout << endl … |
| | I have problem completing a program and I would be really really thankful if someone could help me with this . This is my code so far: [CODE]#include <fstream> #include <iostream> #include <conio.h> using namespace std; void registret(void); void lista1(void); void lista2(void); void search(void); void sortering(void); void addcar(void); void sell(void); … |
| | [code="C++"] class item { string name; string identifier; public: item( string name,string id):{this->name=name;this->identifier=id;} friend ostream& operator<<(ostream&, const item&); friend istream& operator>>(istream&, item&); }; ostream& operator<<(ostream& out, const item& temp) { out<<item.name<<" "<<item.identifier<<endl; return out; } istream& operator>>(istream& in, Cmessage& temp) { getline(in,item.name);//in case sring has space char getline(in,item.identifier); return in; …  |
| | Hi, I know that I can overlaod the operator >> and << and declare it as a friend function in the class for which i am overloading and then write the definition outside of the class. But recently I was writing a string class for myself only to learn and … |
| | Hey, May someone please explain to me why the rename function isn't working? result should display a 0 if the files were sucessfully renamed. it keeps returning a -1. [CODE] #include <iostream> #include <fstream> #include <iomanip> #include <cstdio> using namespace std; int main(int argc, char *argv[]) { bool Stats; char … |
| | I'm not known to be a very memory friendly guy but after about 4 hours debugging my lua+sdl in C++ I finally figured out how to use threads but now I have another problem. I apparently have zero knowledge of memory manangement but thats kind of ok so I've narrowed … |
 | I'm using VC++ 2010 Ultimate and I'm running a Windows 7 x64 machine. I have a function declared to be a dll export ([icode]__declspec(dllexport)[/icode]) and it builds without error or warning, but when I try to load that function with [ICODE]GetProcAddress[/ICODE] it returns NULL. I've looked inside the .exp file … |
| | The worst thing about C++ in my opinion is trying to use a library (with VS2010 at least). It always causes me great pain, and usually I am not met with success. So, I'm trying to use the Magick++ library, which is a part of the ImageMagick program, and I … |
| | I am developing a program's GUI and have been using GTK heavily. However, I have run into some trouble... I need to use gtk_signal_disconnect yet I have been having trouble finding a webpage that describes handler_id. Please help. |
| | Hey, I have a file that I am working with that I have pass into my program through command line arguments. I don't want to touch the file, just want to store a temp of the file then after fixing the temp place it back in the original. After running … |
| | [CODE] #include <conio.h> #include <iostream> #include <cstring> #include <ctype.h> using namespace System; using namespace System::String; enum CardType{ MasterCard, BankCard, Visa, AmericanExpress, Discover, DinersClub, JCB }; bool Validate(CardType cardType, String cardNumber){ int number[16], len=0; for(int i=0; i<strlen(cardNumber); ++i){ cardNumber[i] = atoi(cardNumber[i]); if(isdigit(cardNumber[i])){ if(len == 16) return false; number[len++] = cardNumber[i]; } … |
| | Hello ! I need your help to calculate the complexity of a program. I need this for my exam and i can't understand how it is calculated. I've tried searching for solutions on google and reading about it but i still can't get it. Maybe if someone can calculate it … |
| | Hi, i new here.... I'm making a program which can calculate the below expansion of Ln)(1 + x) = x/1 - x^2/2 + x^3/3 - x^4/4 + x^5/5 - x^6/6 Below is my syntax [CODE] #include <iostream.h> int main() { float num1; cout<<"Enter a number: "; cin>>num1; num1 = num1/1 … |
| | A little program I made to try and remeber C++, first program I've written in C++ in about a year. Tested and working under windows 7 64 bit, run via command line. If you have any improvements or ideas please leave a comment. Cheers K0ns3rv |
| | Hello, I have a difficult memory error to find. I have narrowed it down to a small piece of code, tiny in fact, but the symptoms are baffling to me. I tried to find it with electric fence, but electric fence found nothing. The problem is complicated by my liberal … |
| | Hi All, I am facing issue again and would be great if you help me to understand this code: [CODE] #include <iostream> #include <ostream> using namespace std; class A{ int a; public: A(int a):a(a){ } A operator+(A &other){ A aaa(a+other.a); return aaa; } friend ostream& operator<<(ostream &stream, A &aa){ stream … |
| | Can someone help me i try c++ text with color and it is blinking now i want the text is moving whatever right to left, left to right. I have no idea plsss i begging someone plss help me exmple plss or teach me!!  |
| | Hi everyone, I'm writing an application that needs to be able to [I]capture and playback audio from specific audio jacks, specify the sample and bit rate, and if possible generate a signal given a frequency, amplitude e.c.t.[/I] I've tried to write it using [B]DirectShow[/B] in [B]C++[/B] but it's proved problematic … |
| | I am having trouble running the lua interpreter at the same time im running sdl and am also having trouble with processing events in sdl while lua is embedded basically in some pseudo code this is what it looks like so far [CODE] #include <lua.hpp> #include <SDL/SDL.h> #include "user.hpp" int … |
| | Hi, I'm a beginner, and I'm looking for the simplest way to get the source of a webpage into a string under Win. Also, I'm using Dev-Cpp, and I noticed that many of you don't like it, what would you recommend instead? |
| | For years when people post that they are using Turbo-C/C++ they always get a heated response saying basically "[I]why are you using that piece of sh*t? Use Dev-C++ instead.[/I]" Dev-C++ was being recommended because it's newer, it followed the standard better, it's free, etc. A couple years ago, though, it … |
| | Hi my name is Chris and I am currently enrolled in CMIS102 class. I am really banging my head :@(on multiple occasions) with my latest assignment. I have read every forum, book, and troubleshooting guide there is but nothing out there that has helped me to find the result or …  |
| | help please.. how can i store the selected value from my database to a variable in my c# form... (eg. variable=select idnum from tblename)<--- i know i cant do that.. how can i pass its value?? im talking about a specific value from the database. lets say i log in … |
| | [CODE]// Program Dictionary // Proogram that uses linked list to maintain a dictionary #include <iostream.h> #include <stdlib.h> #include <stdio.h> #include <conio.h> #include <string.h> #include <ctype.h> class dict { private : struct node { char data[20] ; char m[100] ; int mcount ; struct node * link ; } *dic[22] ; …  |
| | Hi friends, I wrote a code to build a matrix with specific calculations. When I'm using 3000 elements works well ... But I did a test with 150.000 (150.000 x 150.000) and I had problems. " terminate called after throwing an instance of 'std::bad_alloc' " I'm copying the code part … |
| | I have a class Node and want to declare an initially unknown number of instances of this class at run-time. First the program determines the number of nodes (num_n) from the user and then I want to define num_n objects. I have crudely got around this by defining a maximum … |
| | Dear All, I am writing a web application based on C#. What I would like to achieve is the following: an application that uses a single, global SQL connection. Which can be opened or closed when querying the db. I think it would be nice to avoid instantiating an SqlConnection … |
| | excuse me if this question has been asked before than i am sorry i couldn't find it. so i am ruining Ubuntu on my desktop computer and i have started c++ using code blocks i was wondering how do you make a GUI window for Linux or am i using … |
| | I know that you can use assembly combined with C++(either inline or using modules written completely in assembly, linked with the rest of the program), and I was curious how does a program written in different programming languages(eg Mozilla Firefox)work, and how it gets built. |
 | i have a error in c graphics "segment exceeds _TEXT 64K" i reduce some lines but i have no solution please help me as soon as possible i want to complete my program as soon as possible please help me some one  |
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