49,757 Topics
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| | I have a litle problem when i try to list Aluno = Student (option 4 in the program). i have other problem, when i try to save some Aluno(student using option 1) te program telll me that it is already created. Some one can help me? [ICODE] #include <iostream> #include …  |
| | hello everybody, Can anyone please tell how can i make C++ screen full in windows vista. thank you |
| | [CODE] class Base { public: virtual void fn(){cout<<"fn base\n";} virtual void myfn(){cout<<"myfn base\n";} }; class Derived : private Base { private: void fn(){cout<<"der\n";} void myfn(){cout<<"myfn Derived\n";} }; int _tmain(int argc, _TCHAR* argv[]){ Derived d; Base *p = &d; //Error: conversion from derived * to base * exists but is inaccessible …  |
| | Hi, I have copied the quicksort algorithm out of my text book, but it isn't working properly and there are no compiler errors so I am struggling to debug. it is partially sorting so I think it must be one of the conditional statements or something not declared how I …  |
| | hello everyone... can you help me with this assignment about hash tables.. I run the code on a linux machine and gave me errors.. here is the assignment and my code in attachment can anyone fix this please...I need to hand it today.. thank you all Asem  |
| | Hi All, I have a class of type class Row_Entry { public : //CString symbol; CString bid; CString ask; CString bid_size; CString ask_size; CString bmmid; CString ammid; CString type; CString exch; Row_Entry() { } }; I am creating a vectorlike this `std::vector<Row_Entry>RAW_ENTRY;` Now i have pushed all my required data … |
| | anyone can help me? please problem: write a program that creates three processes and performs matrix operations at the same time. each process performs a different matrix operation. the program reads three matrices from a text file. the size of the matrix can be of any valid size. use two-dimensional …  |
| | Whats wrong with this code //--------------------------------------------------------------------------- #include <vcl.h> #include <fstream.h> #pragma hdrstop #include "MainUnit.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { //char *acc, *id, *sur, *bal; int col = 0; int row = 1; int … |
| | Hey everybody, I'm a little stuck on this simple program I'm trying to run. Right now it takes in a list of words and makes a single string out of them, but what I really want to do is make each word into its own new string, or maybe create … |
| | Are there any standard C++ libraries that support multithreading other than windows.h? |
| | Hi everyone, This is my first post on the forum, although I've been coming here to find search for help for some time now. I'm taking a C++ programming class, and am having trouble with my most recent assignment. I'm not here for straight-up answers, just a little help. I … |
| | does any1 have any idea about how to,when i press a button,print out 1 line of text written by me and when i press it again another replaces the old? i already got the saving working so u dont have to worry about that  |
 | I'm creating a multiplayer game using winsock, but I've been having several problems with winsock. I've been searching for an alternative to it, but I haven't found anything. If anyone could point me to something I could use in place of winsock (a free something), I would greatly appreciate it. |
| | Can anyone explain me pointers to 2D array ?? I have to input array of string using and read them in another function but I am having a REALLY TOUGH time with pointersan anyone explin it to me or refer good guide to pointers ?? I am using borlnd c++ … |
| | hi I keep getting the segmentation fault thingie and i think i know the line that is causing the problem, but i dunno how to fix it. please take a look at the code. [CODE] ... class AnotherClass{ ... }; ... class AClass{ private: list<AnotherClass> listName; list<AnotherClass>::iterator it; ... public: … |
| | How do you read and display a 2d array? the input text is below i just really have no idea of tried everything :( any sort of help would be appreciated [ICODE]* . . . . . . . . . . . . . . . . . . … |
| | I recently completed a small console app that accepts input from the user and places it in a floating point array, which was implemented through a for loop. I have not spent much time studying error handling and was wondering if anyone could refer me to a useful error-handling tutorial. … |
| | hello, how do i make both threads have access to the same set of updated data, when they call different functions? in addition, is the way i pass in the variable "myObjs" correct? can i pass in STL containers the same way? example: [CODE] ... class aClass{ ... }; int … |
| | hello All, I am trying to write a multi threaded program in C++ , but it suddenly exits and i can not understand what happens , it actually do not get any error message or exceptions error , just get out of the program. need your help, thanks . [code=c++] … |
| | Hey guys. After the great help i received with my previous thread of reading in a file, i thought id post up my next trouble. This is my code for my ISBN search function which works fine after the information has been read in to the 'book's. [code]int BookStore::findISBNRecord() { …  |
| | Hey guys. Im having some trouble with reading from a text file, into a class with strings and ints. Here is my code for my read file function: [code] ifstream infile; infile.open("books.txt"); if (infile.good()) { for (int i=0; i<=5;i++) { getline(infile, book[i].title); //string getline(infile, book[i].isbn); //string getline(infile, book[i].publisher); //string infile … |
| | Hi, Could anyone explain me above error? [CODE=cpp] // friend overload + operator function #include<iostream> using namespace std; class Distance { private: int feet; float inches; public: Distance() { feet = 0; inches = 0.0; } Distance(float f) { feet=int(f); inches = 12*(f-feet); } Distance(int ft, float in) { feet … |
| | Hello there, I'm trying to compile a project in Visual Studio 2005 and the compiler finds errors in the file fstream.h. Some of them are: c:\program files\microsoft visual studio\vc98\include\fstream.h(88) : error C2872: 'streambuf' : ambiguous symbol c:\program files\microsoft visual studio\vc98\include\fstream.h(89) : error C2872: 'streampos' : ambiguous symbol c:\program files\microsoft visual … |
| | Could someone give me a detailed explanation or give me a resource that explains something like how if I created my own custom 3D model that had 8 vertices would that be the same as saying 8 polygons because I always here talk about things like game developing companies throw … |
| | Is there any real different between using an union between two types and a reinterpret_cast between two types, for example-- [code=c++] #include <iostream> int main(){ union{ unsigned short *a; float *b; }; float value = 0.6f; b = &value; std::cout << *a << std::endl; unsigned short *s; float *f; f … |
 | I have the following code that when compiles with my test program gives me a segmentation fault, I hope you guys can help me with this. I am compiling on a gcc compiler using: [quote] g++ a3test.cpp screen.cpp dtio.c -lncurses [/quote] screen.h header file: [code=c++] extern "C" { #include "dtio.h" … |
| | I'm new in c++ programming. I have to do a program to save data from classes (Student, Teacher and Statistics). What may i use to save that values? (File, sql...) and how to use. If some one show me a litle program....:icon_smile: |
| | I was reading the GPA score thread but it didn't help me any. i am suppose to be making a program that should prompt the user to enter up to 30 GPA's which are stored in a single dimension array. each time the user enters a GPA they should have … |
| | Hello once again everyone, my previous [URL="http://www.daniweb.com/forums/thread141733.html"]problem [/URL] appears to be resolved right now thanks for everyone who has helped. I have to make the following derived class [quote] Your LField class is derived from your Field class and represents a line field. Upon instantiation, an LField object receives between … |
 | Few Questions: Passing by values(copy of the value) or references(actual value)? - What is the difference minus the two mentioned? - What is the better choice? - etc? Also this is a more general quesiton OOP, with most languages its better to learn and use OOP then just programming a … |
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