51,593 Topics
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| | [CODE]string currentUser() { string user; ofstream outf("CurrentUser.dat", ios::trunc); system("whoami >> CurrentUser.dat"); outf.close(); ifstream inf("CurrentUser.dat"); inf >> user; return user; }[/CODE] This is a function that gets the name of the current active user. It creates a data file, with the contents being the username. The problem is, to create a …  |
| | I need help with this program, I am new and i am loosing the battle. Write a program that contains a class that implements the days of the week. The program should be able to perform the following on an object of the class: 1. Set the day. 2. Print … |
| | linked lists? I recently started learning about it and it is really confusing. What tutorial would you recommend?  |
 | Hello, I would like to use the QT LGPL version with my software, but I'm really not sure what I'm allowed to do with it. The license is very confusing. I'm hoping I can dynamically link to some QT DLLs and use them without too much GNU-tape. What other requirements … |
| | Can anyone help me in parsing multipart foorm data.. Is there any third party lib or anyone has written some code??? waiting eagerly... |
| | I have some problems about promotion traits [code] template<typename T1, typename T2> class Promotion; template<bool C, typename Ta, typename Tb> class IfThenElse; template<typename Ta, typename Tb> class IfThenElse<true, Ta, Tb> { public : typedef Ta ResultT; }; template<typename Ta, typename Tb> class IfThenElse<false, Ta, Tb> { public : typedef Tb … |
| | Hey guys, I'm looking for a way to obtain an SSD serial number and I'm not interested in the volume serial number. Thanks in advance, Jeff  |
 | Can somebody help me, I wish to learn OpenGL and I don't understand how to set it up. I am using a windows XP machine with Code::Blocks 8.2 and MingGW. How do I get OpenGL working? |
| | When I run it starts with a junk value in the first node. I can't get the getValue function to work properly either I get error that says to few arguments when I try to call it in main. Also the minValue and maxValue doesn't output anything and I tried … |
| | This is a mastermind game. I was trying to make sure that my twoD array was beinga ssigned right by printing it out real quick before i use it to draw a board in the console. For some reason im gettin these errors and i dont even have a clue … |
| | the program should check if all [U]even [/U]integers from [I]low [/I]to [I]high [/I]can be written as the sum of two prime numbers the lower limit [I]low [/I]will be greater than 2 the upper limit [I]high [/I]will not exceed 10000 assume both inputs for [I]low [/I]and [I]high [/I]are even if all … |
| | I saw a code that had <conio.h> and the whole code is working nice but this line seems to be the error. I know that this is old one and the .h format is replaced with using namespace but still I get an error. What is the problem? Maybe the … |
| | Hello I have a Container class that will allow me to store & retrieve elements from it easily by using the member variables of the elements as their key/identifier. My problem is I am tring to store a pointer to an objects member variable, but I get a compiler error. …  |
| | Hi all. I have detected something that I can't explain, and hope someone can help me. I have 2 functions for allocating and de-allocating arrays: [CODE]char **c; void allocate() { char **c = new char*[1000]; for(int i = 0; i < 1000; i++) { char *g = new char[10000]; for(int … |
| | Hello I try to make one linked list to double linked list but i have some probems with this .Can somebody help me? This is yhe the linked list: [CODE]typedef struct ns { int data; struct ns *next; } node; node *list_add(node **p, int i) { node *n = (node … |
| | I am having a compiler error that causes a screen to pop up that says break or continue. I know it is something wrong with my program but I am at a lost as to what it is. I was just trying to test the first function as you can … |
| | I haven't programmed in sometime and am rusty. I was never an expert either. I know my code has a simple error but I can't figure out what it is. I was practicing coding when I couldn't determine why the class constructor wasn't working as intended. #include <iostream> using std::cout; … |
| | i see this code in this thread, i want to know how to get input by user or from file in this code. for example this list how to use it as input in this code. i don't know how to modify and how to use it. Daniweb thread reference … |
| | [code=c++] int main() { Ferma *f[20]; int i=0; int e=0; do { cout<<"Alegeti optiunea:\n"; cout<<"1.rata\n" <<"2.gaina\n" <<"3.porc\n" <<"4.vaca\n" <<"0.iesire\n"; cin>>e; switch(e) { case 1: f[i]=new Pasari("rata"); //error at this kind of assignement i++; break; case 2: f[i]=new Pasari("gaina"); i++; break; case 3: f[i]=new Mamifere("porc"); i++; break; case 4: f[i]=new Mamifere("vaca"); … |
| | Hello forum. I cant figure out how to overload the '+' operator or maybe theres another error? Im posting from phone so excuse the slopyness. Thanks! [CODE]#include <iostream> #include <string.h> #include <ctype.h> using namespace std; class Ferma { public: static int nr_rate; static int nr_gaini; static int nr_porci; static int … |
| | For simulating mouse movement on windows would it be better performance-wise to move the cursor to absolute coordinates or to move it relative to it's previous location? Obviously if moving to an absolute location each pixel in between must also be reached. |
| | I want to sort array of int, strings or any data type. Therefore I decided to use comparable array as an input to my sort function. But I get an error when I using it. Comparable arr[]; the compiler says "comparable is undeclared identifier". I think I must include specific …  |
| | I have to modify the myqueue and mystack templates and make a new class called myerror in order to make the main.cpp work, im getting countless errors tho in the main.cpp Here are my errors [code] main.cpp: In function ‘int main()’: main.cpp:52: error: no matching function for call to ‘MyStack<double>::MyStack(int)’ …  |
| | I am using a map in the standard way. It holds keys and values and sorts them by key and works wonderfully. However, after I am through adding to the map, I need to rank the keys based on their associated values. What is the best solution? A) Take map<myKey, …  |
| | Hi, I need to use the libraries of a commercial solver NOMAD in my C++ code. I got error LNK2001 error. I have #include "nomad.hpp". In the NOMAD handbook, the following is written. If you are using Visual C++, your programs will not link with this version of the library … |
| | [CODE] // mainfrm.h enum { logAll = 0xff }; void Log(int nIdx, LPCTSTR lpText, int nType = logAll, LPCTSTR lpDeviceName = NULL); //SesLog.h int m_nDeviceID; CString m_strDeviceName; // SesLog.cpp #include "Mainfrm.h" #include "SesLog.h" void CSessionLog::Log(LPCSTR lpText) { if(m_pParent) m_pParent->Log(m_nDeviceID, lpText, logAll, m_strDeviceName); [/CODE] error LNK2019: unresolved external symbol "public: void … |
| | Hello I have a question regarding the function length(). I want to find out the length of the string that is inputted by the user. When I use the length() function it only counts the characters from the first word. Can somebody please take a look at my code and … |
| | this is an assignment homework I have defined a structure X.... [CODE]struct X{ string name; char grade; }; [/CODE] here are the questions a) Declare r as a variable of X, s as a pointer variable to X and w as a pointer variable to a pointer of X. [CODE]X … |
| | Hello, I am trying to read exact 2 bytes from binary file, and transfer it to int, whatever is it 2 or 4 bytes. Atm on my computer is 4 bytes. So I have two bytes into four bytes scenario. I am using this code [CODE]ifstream in_stream; in_stream.open("test.dat", ios::binary); streamoff … |
| | [CODE]// student.cpp - Script 9.7 #include <iostream> #include <string> // Declare the Person class. class Person { public: Person(std::string theName); void introduce(); protected: std::string name; }; // Declare the Teacher class. // Teacher inherits Person. class Teacher: virtual public Person { public: Teacher(std::string theName, std::string theClass); void teach(); void introduce(); … |
| | I am having a network class and a dialog class.I have to send the data recieved in network class to dialog class but not direcly i.e it should not be tightly coupled with my dialog. Help me out..............  |
| | [CODE] #include <iostream> #include <fstream> using namespace std; int main() { char ch; ofstream outf("ITEM.txt"); cout << "Enter item: "; char name[30]; cin >> name; outf << name << "\n"; cout << "Enter item cost: "; float cost; cin >> cost; outf << cost; cout << "written to file item.txt\n"; … |
| | When I click on any of my menu bar, the menu wont expand or sometimes it does but missing some. I tried reinstalling and resetting it but it still doesn't work. Please help. Thanks. I attached a print screen of the problem. |
| | help i am a beginner and i need help with my final program. i beleive i have everything set but i am not sure how to write the function. i want the function to add up all of the rides and give a grand total but i can not get … |
 | I have said program: [code] #include <iostream> #include <fstream.h> #include <conio.h> using std::cout; using std::cin; using std::ios; using std::endl; int main() { char first[6]; char middle[16]; char last[16]; int counter = 0; char temp; cout << "Please enter your first, middle, and last name:\n>"; cin.get(first, 6); cin.ignore(80,'\n'); cin.ignore(80, ' '); … |
| | I'm not sure if this is possible. Basically, I have a function that will detect the current active user. [CODE]string currentUser() { string user; ofstream outf("CurrentUser.dat", ios::trunc); system("whoami >> CurrentUser.dat"); outf.close(); ifstream inf("CurrentUser.dat"); inf >> user; return user; }[/CODE] I have another function which will create a directory in the … |
| | First let me thank you for taking the time to read this. I've been working on this code for a while and I can't seem to get it to run. Basically what I have to do is take in data from a file then output the data in a report … |
| | Guys need some advice. I am working on a algorithm for multiple string searching using OpenMp. So within my program I am trying to [U]initialise[/U] each elements of an array to a value of a variable. What I mean by is say if I have array intialised as shown below: … |
| | Hello to everybody, I am a c++ beginner, and I want to do a program that reads a file with a column with numbers, "finds" the repeated numbers and write the repetitions on other file. For example, I have a file like this: Input file: 6 5 4 4 7 … |
 | I'm not really sure what the proper forum for this is. Basically, I have compiled a small program (written in C++) that I want to execute. It first creates an AppleScript, then runs it. But, when the program is run (it is a 'Unix executable file'), I want to to … |
| | compiles there are no errors but it only outputs part of the desired output and then exits in a segmentation fault This is the output its printing out [code] Input is: 25 10 - 100 115 - - 300 2 5 * / / Contents of input queue: 25 10 … |
| | Don't know how to approach this problem, here's what I have so far, any help would be greatly appreciated. PROBLEM : Modify the function days() written for exercise 1 to account for the actual number of days in each month. Assume each year contains 365 days( that is do not … |
| | [CODE]double speedTest() { double dInitialTime = clock(), dFinalTime = 0; double dRepititions = 99999999; double dResult; cout << "\nCalculating...\n\n"; for(int nCounter = 0; nCounter <= dRepititions; nCounter++) { pow(dRepititions, pow(dRepititions, dRepititions)); } dFinalTime = clock(); dResult = dFinalTime - dInitialTime; ofstream outf("Results.dat", ios::app); outf << dResult << endl; return dResult; … |
| | hi i know there is a lib for mysql in c++, but i can't seem to install it properly! someone has a place i can find a tutorial for mysql for: Windows XP, Codeblocks. thx for helping. Checklist for Fast Responses: 1: Search before you post. Does what you're looking … |
| | OK, I have been out of the loop with C++ for a year now. I am finished with school, so this is NOT homework. Just trying to clean up some old assignments for future references. (the code is in "messy" shape til I can get it working properly and clean … |
| | Hi I'm looking for an efficient way of converting an array of integers to an array of doubles. Currently I'm doing this: [CODE]int *a = new int[1000]; //And then assign values to the indexes double *b = new double[1000]; for(int i = 0; i < 1000; i++) { b[i] = … |
| | [CODE]// Listing 14.4 // Add Function #include <iostream> class Counter { public: Counter(); Counter(int initialvalue); ~Counter() {} int GetItsVal()const {return itsVal; } void SetItsVal(int x) {itsVal = x; } Counter Add(const Counter &); private: int itsVal; }; Counter::Counter(int initialValue): itsVal(initialValue) {} Counter::Counter(): itsVal (0) {} Counter Counter::Add(const Counter & rhs) … |
| | Well i'm beginer in c++ programing languages, what I need to know is, What is the partations of c++? What kind of programmes I can built with? And why it's the best programming languages? |
| | Hi, I have a C++ program (built in Visual Studio 2010) and want to add a user interface to package it up. I've been reading around about windows forms and the win32 API, and found loads of tutorials showing how to create interfaces but I can't find any advice on …  |
| | Hey all, I just wanted to know if I should use a different process to run my loop. I use a while loop until the AI figures out the number. I know there is a more efficient and easier way to make this loop happen with BOOLEAN. Setting while(bool = … |
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