49,760 Topics
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| | Hello, I would like to know how you can keep running a function over and over again, so that it can keep adding the stored value. For example If Bob uses a program to purchase a ticket, lets say that Bob purchases 5 tickets out of 55 tickets (There's only … |
| | Hi, how could i check is a number an int or a float? |
| | I wanna convert an integer to a character then i will store it later to the index of a c-string...... something like... int res=123 then it will be putted in.... var[0] = 123 where in var is a cstring, and here 123 is now a char type..... here is what … |
| | Hello all. i might have posted about this recently but, i have done much research and refined my research and am close to a solution. I am trying to use the click of a ahref link with a variable tacked on the end, to send a message to one of … |
| | Hi, I'm trying to create a thread for running some tasks. I copied the code from an old console application (which compiles fine), but can't figure out why it's not working now. I have searched for the error code and came across this suggestion: "Are you passing the name of … |
| | Hello, On lines 70 & 75, the word [B]col[/B] is marked as a syntax error. When I hover my mouse over, it tells me that [B]Error: expression must have pointer-to-object type.[/B] Why am I getting this error and how do I fix it? This program prompts & reads the file …  |
| | Hi all, I'm having some troubles practicing linked-lists: the problem calls to implement string as a linked-list of chars. So I created a new class - mystring and defined building function, show(), and also destructor. The build and show works correctly. I get the exact same string I sent as … |
| | The idea is to get a sentence of words and then scramble the middle letters of each word without altering the position of the word in the sentance. So for example, the user inputs: Programming is very interesting! the output should be: Pogrmarmnig is vrey itenrseitng! So far, i have … |
| | Sorry the subject is hard to read I had to fit it all in there briefly but so in this external function getNumAccidents I need to read in the user-input number of accidents for each NYC borough to be stored in their respective array places, but also validate the input … |
| | Alright, I understand some of the basics of big O notation, but I have a test coming up in a few days and I need a bit of help. I understand that if you have a loop that iterates i*=2 then it would run lg(n+1) as log base 2 and … |
| | HI, I recently joined the forums (today) and i would officially like to say hi. [COLOR="Green"]HI[/COLOR] For my question: [COLOR="Red"][B]Are there any books,websites or tutorials that use a moderate vocabulary that teach C++?[/B][/COLOR] Thanks for the help in advance. BTW is there a rules page? _______________________________ Bye  |
| | this runs but with unexpected results,why?I insist on using cin.getline and I was hoping if statement will execute, however the else statement is da one dat executes. As for the question I think the first answer is correct char name[256]; cout <<"enter name"<<endl; cin.getline(name, 256); if (name == "My boy") …  |
| | I'm trying to make encryption program but when i run the program it gives me this error: Debug Assertion Failed! Program:...nts\visual studio 2010\projects\encrypter\debug\encrypter.exe File:c:\program files\microsoft visual studio 10.0\vc\include\xstring Line:1441 Expression: string subscript out of range For information on how your program can cause assertion failure, see the Visual C++ documentation … |
| | From A C++ beginner. I have written a class that splits the first list into 2.I used iterators to accomplish it. Now I am supposed to create a new method that splits the input chain ∗this, destroys the input chain and uses its nodes to construct the chains a and … |
| | Hi all, I have 2 forms, form1 is for entering Name, ID and School. I want all the data i enter in form1 to show in a table in form2. Can someone recommend which way is best of doing this? Many Thanks  |
| | hello :) i'm using MFC SDI, & i'm less familiar to it. i need to know, 1: i have found a way of printing a string as [CODE]pDC->DrawText( " Task still pending!!! ", &rect , DT_PATH_ELLIPSIS );[/CODE] but i want to know, how can i print a 2D-Array in MFC … |
| | Hi All, I am trying to convert the following C++ code to C#. pExportDir = (PIMAGE_EXPORT_DIRECTORY)GetPtrFromRVA(exportsStartRVA, pNTHeader, pImageBase); [CODE]template <class T> LPVOID GetPtrFromRVA( DWORD rva, T* pNTHeader, PBYTE imageBase ) // 'T' = PIMAGE_NT_HEADERS { PIMAGE_SECTION_HEADER pSectionHdr; INT delta; INT delta2; pSectionHdr = GetEnclosingSectionHeader( rva, pNTHeader ); if ( !pSectionHdr … |
| | Hi all, I want to store the result of a SQL query into some kind of container. Typically, a result consists of several columns, each of which has different types - depending on the query. E.g., 'select productname, price, stock_count from...' leads to 3 result columns: char, float and int. … |
| | [b]I want this code to call generic catch block whenever any special character(eg. !,@,#,$,%,&,*, etc) is enetered in numerator or denominator. So what code should I add to this. Any help would be appreciated. Thanks. [/b] [code=c] #include <iostream> using namespace std; int main() { try // generic catch block …  |
| | I am getting ready to write a programming competition on Tuesday (the Canadian Computing Competition) and I remember that last year it said that only standard libraries can be used. I was having trouble deciding which libraries are standard. I ended up using windows.h and when I suddenly realized that … |
| | Hey all, I am working on my first C++ prog and I'm having an issue on my output. I compiled the code ok but when i try to execute, the output comes up with weird numbers and letters where it is supposed to display the "photos in"[CODE]// Name: Danny Delgado … |
 | Hi, I am learning templates so I have one question for this code: [CODE]template<typename T, int Number> class Data{ T Array[Number]; public: T& operator[](int); }; template <typename T,int Number> T& Data<T,Number>::operator[](int element){ return Array[element]; }[/CODE] I wish to create specialization for that class template, for any random data type, but … |
| | I have following header file defines test2.h ----------> header file template<class T> class temp2 { public: temp2(); virtual ~temp2(); }; test1.h ----------> header file template<class T> class temp1 { public: temp1(temp2<T> (temp2<T> *temp2ptr); ~temp1(temp2<T> (); protected: temp2<T> *tempptr; }; test3.h -------------> header file class test3 { public: test3(); virtual ~test3(); … |
| | Hi all, I am new to programming and having been experimenting various codes recently. I have managed to link 2 form so that when i click a button on Form1, Form2 opens. I am using the code [CODE]Form2^open2 = gcnew Form2(); open2->Show();[/CODE] This codes work fine. Is there a way … |
| | One way to measure the amount of energy that is expended during exercise is to use metabolic equivalents (MET). Here are some METS for various activities; Running 6 MPH: 10 METS Basketball: 8 METS Sleeping: MET The number of calories burned per minute may be estimated using the formula Calories/Minute= … |
| | Hi all, I have started finding lots of uses for abstract classes to define interfaces for common functionality using polymorphism and i know that using polymorphism and virtual functions incurrs some additional call cost of functions. So what im wondering is can i get the best of both worlds? consider … |
| | Hi guys, how are you? Well, i have my science fair soon and i want to build a software that can copy any given file to any removable device that gets connected to the computer it is running on.. But the problem is i dont know how to do this... … |
| | hello :) i've Two questions to ask. i'm working on MFC SDI, i'm less familiar to MFC. i found that a way to print a string in MFC SDI is: [CODE]pDC->DrawText( " mc Test Ellipse ", &rect , DT_PATH_ELLIPSIS );[/CODE] but i have to print a 2D array in MFC … |
| | I'm trying to use Box2D lib with SDL lib. NOTE that I only get the errors below after I link in SDL too. I think i link everything accordingly but in the end when I write up some code i get errors like: 1>------ Build started: Project: box2d test2, Configuration: … |
| | I am currently working on implementing an operating system in turbo c which uses c as the programming language. For this project we must implement pagination. I have absolutely no idea how to do this in c and most web results are for web pages using mySQL or java or …  |
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