51,593 Topics
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| | Hey there. Just beginning to learn c++ on my own(not easy). Please fogive my lack of knowledge. I have a list of large numbers(50 digits) that i copied. I want to split them into an integer array of size [100][50]. I dont want to have to go through and put … |
| | Hello, I'm trying to create a program to calculate the factorial of variable int input. I am using xcode, and it's giving me an error saying "factorial was not declared in this scope" on the line within the else statement. I have found other programs on the internet, but I … |
 | Hey guys I have come up with a solution for the problem I have but I would like to know how I could do this the way I initially had it set up but without the leak of course. vec3f.h [CODE]class vec3f { public: GLfloat _x, _y, _z; vec3f(){}; vec3f( …  |
 | [CODE]Memory of a variable or object automatically terminated of finish at the end of program than why we use destructor?[/CODE]  |
| | When reading out of a textbook, is it good practice to write your code while looking at examples in the book? Is there any tips or advice someone can give when it comes to learning C++ from a book? |
 | I give up hehe. been looking over the form and the internet and couldnt find anything that worked. what i want to do is simple. i have made a program that uses a MDI form (basicly a shell form that opens forms in it). and in the menu bar it … |
 | I posted a while back about how to overload << It seems all the examples online have the second argument as const, ie [code] ostream & operator << (ostream &output, const Point &p); [/code] but if I have a member function that simply returns a double [code] double Point::getX() { … |
| | hellow; im working on visual studio c++ express ediion 2010 when i chose a win32 project i can include any dll as wont and it's work without a problem but when i chose clr application windows form and i include for exempl sql.h i had this error pleas help me … |
| | Hey, this might be a stupid question, but I just looked into the code of one thing which I can't tell what it is, but you get the idea here: [code] static ChatCommand unbanCommandTable[] = { { "ip", 'm', &ChatHandler::HandleIPUnBanCommand, "Deletes an address from the IP ban table: <address>", NULL, … |
| | im using dev c++ my problem is how to create a notepad when i run the program.. ex. i input a name.. and then it will create a notepad in my document and the name of the .txt file is the name what i input. thx in advance. |
| | Hi everyone This is my first post here, so sorry if I break the etiquette of the forum. Anyway I am a founder in a small Danish company producing tools and services that help developers build better games. Historically we have focused primarily on flash due to the ease of … |
| | hello help me...i need to create a parse tree with this source code: #include <iostream.h> int main() { int x,y; double ave; cout<<"Enter first number"; cin>>x; cout<<"Enter second number"; cin>>y; ave=(x+y)/2; cout<<"The average is"<<ave; return 0; } |
| | I think that I misunderstood something about class definitions in c++... Why it is legal to define class in multiple files, like this: file Test.cpp: [CODE]#include <iostream> using namespace std; void testFunc(); class A { public: void printText(); } clA; void A::printText() { cout << "file: Test.cpp, class: A, method: … |
| | I am trying to make a dll but I am coming up with the following error: \Debug\VideoCapture2.dll.intermediate.manifest : general error c1010070: Failed to load and parse the manifest. The system cannot find the file specified. I set up my project according to [URL="http://msdn.microsoft.com/en-us/library/ms235636(VS.80).aspx"]msdn[/URL] using visual studio 2008. I looked for … |
| | I have a solution with many projects (assembled sepparetely), all works fine, but I want merge all because i want make only one project (I want it more secure without reflection to make obfuscation process). In process of integration anything appear not be assigned correctly. - I want run unified …  |
| | I'm trying to write a blackjack game, but I ran into a problem with random integers. I'm to the point where the player has there original number, and they've chosen to hit. I need help figuring out how to make random_integer keep it's value, but then add another random integer … |
| | Hey, is there a way to recognize the click on the "Show Desktop" button? Can be in C#, too. Thanks :D |
| | [code] { private PrivateFontCollection MyFonts = new PrivateFontCollection(); private Font messageTextFont; [/code] [code] public Form1() { InitializeComponent(); // get the message text font byte[] fontResource = XboxLiveBioCreator.Properties.Resources.ConvectionRegular1; GCHandle fontHandle = GCHandle.Alloc(fontResource, GCHandleType.Pinned); MyFonts.AddMemoryFont(fontHandle.AddrOfPinnedObject(), fontResource.Length); fontHandle.Free(); messageTextFont = new Font(MyFonts.Families[0], 9F, FontStyle.Regular); button1.Font = messageTextFont; //other code here } [/code] My … |
| | I am fairly new to c++ and have been working on this problem and asked the professor for help, but he has really been non-compliant. I am lost on this and keep gettin error messages that I do not understand how to fix. Any help that could be given would … |
| | Hi I am having trouble with this program, because if the user inputs a multiple word answer for the second question, it will only display the first word of the given answer. And I tried using getline(cin, answer) instead, but that just did not even ask me for an answer … |
| | PLS HELP ME TO CODE THE MAGNETIC FIELD AT A POINT FROM A CIRCULAR CURRENT LOOP BY BIOT-SAVART LAW.PLS HELP NEED TO SUBMIT COMPUTER PROJECT WILL DUE TOMMORROW PLSSSSS HERE IS CODE BY MY OWN WAY #include <iostream> #include <conio.h> #include <stdlib.h> #define M 4*3.14*10^-7 main() { float B,N,I,R; cout<<"Enter … |
| | Hello everyone. I have seen in quite a few programs, a menu that is actually scrollable. Not a scroll-bar (that can be implemented on a window via the WS_HSCROLL|ES_AUTOHSCROLL flags) but a scroller menu. The menu I am reffering to is often seen inside of windows folders, where the menu … |
| | I embedded a font to my winform application and the font showed up on my computer as well as many others. But for some wierd reason it shows up as blank buttons (I used the font on buttons) on some peoples computers. It is not the OS they use as … |
| | [code] #include <iostream> using namespace std; using std::cerr; using std::cout; using std::endl; #include <sstream> #include <string> #include <fstream> using std::ifstream; #include <cstdlib> // for exit function // This program reads values from the file '1.txt' // and echoes them to the display until a negative value // is read. int …  |
| | Hello World! I'm new in the forum and I don't have too much experience with C++, I'm looking for help with my code, I hope you could help me :) I have to read from a file.txt different collumns, each of them corresponds to a parameter and store them in … |
| | I'm doing a Win32 video application and I've started with the SimplePlay sample of last Windows SDK v7.0. When I want to release the video and display a picture through an WM_KEYDOWN event the last video frame remains until an WM_SIZE or an WM_MOVE event is received. Namely, I have … |
| | Here is a very simple code demonstrating how 'protected' is used [CODE]# include <iostream> using namespace std; class A { protected : int a; }; class B : public A { public : void f_1() // * { a = 10; cout << a; } }; int main() { B …  |
| | Hi, I’ve 3 classes : A, B and C. The class A includes an object from the class B and another object from the class C. In my class B, I’ve a function that returns a vector of struct. This function is called in the class A and after that … |
| | Hi, I have the following code which compiles absolutely fine.. [CODE] using namespace std; #include<iostream> #include<stdio.h> #include<conio.h> struct node { int data; struct node *link; }; void add(struct node **,int); void display(struct node*); int count(struct node *); int main(void) { struct node *p; p=NULL; add(&p,5); add(&p,1); add(&p,6); add(&p,4); add(&p,7); display(p); …  |
| | I have seen in a couple of places that strstream objects are deprecated, but there are also stringstream objects. My compiler has 2 headers <strstream> and <sstream> and I don't know which is which. In light of this, which header should I use to produce more modern code? I suspect … |
| | [code] #include <iostream> using namespace std; using std::cerr; using std::cout; using std::endl; #include <sstream> #include <string> #include <fstream> using std::ifstream; #include <cstdlib> int main() { ifstream indata; // indata is like cin char num; int sar,ri,sat,ha; sar=0;ri=0;sat=0;ha=0; char s[]=".txt"; for(int some_int=1;some_int<=3;some_int++){ ostringstream buffer; buffer <<some_int; string s1 =buffer.str(); s1+=s; indata.open(s1.c_str()); … |
 | Hello! I've been learning how to code C++, but entirely Console apps! Can you tell me how I can convert Console apps into GUI apps? [Only using libraries built into Dev-C++ {yes, I know it's a pain!}] Thanks in advance, Panarchy |
| | using namespace std; int main() { vector<double> row(3, 0); vector<vector<double> > table(3, row); printVectorOfVector(table); Fill in a 2 dimension 3x3 array with odd numbers. The display shows the array as it is being filled. Use random integers to fill the array. Use numbers between 1 and 10. Initialize array to … |
| | So, due to my last question, [url]http://www.daniweb.com/forums/thread303487.html[/url], I am becoming acquainted with the vector template. However, I clearly am not using the commands correctly. Below is a section of code which, eventually, leads to a segmentation fault later in the program. First an introduction of the variables: [CODE] using namespace … |
| | Hello everyone, I'm having problems with this code: [CODE=cpp] #include <vector> using namespace std; template <class Type> class Some { private: vector<Type> elements; vector<Type>::size_type index; //THIS IS WRONG public: Some() { } }; int main() { } [/CODE] It doesn't compile, giving me [CODE] p.cpp:9: error: type ‘std::vector<Type, std::allocator<_Tp1> >’ … |
| | Hi, I am trying to incorporate a struct and class in the same program to calculate overtime pay and hours for one person. I am having a hard time with these two and especially putting them together. I am not sure what to do to get the program to compile … |
| | I have a problem casting a long to an int in c++ There is a long "biWidth" in the &pVideoInfoHeader->bmiHeader struct, I simply want to read this into an integer value "Width" [CODE=c]//check the video info header Width=(int)(&pVideoInfoHeader->bmiHeader.biWidth); Height=(int)(&pVideoInfoHeader->bmiHeader.biHeight); //break point here [/CODE] When I step through the code to …  |
| | okay i have an array of a struct. [CODE]struct MYSTRUCT { float myFirstVal, mySecondVal, myThirdVal; unsigned char myByte; } int myCountFunction(MYSTRUCT *&myArrayOfStructs) { int myCount; // question area return myCount; } [/CODE] here is my question. how do i count the number of elements in an array of type blah … |
| | Hi C++ experts, I am looking for a script which given a structure made of basic types can generate a C++ class which encapsulate the structure and it also generates the stream in and stream out method for the structure e.g [code] input int a ; char b; string c; … |
| | #include <iostream> #include <cctype> #include <fstream> #include <cstring> #include "ass1.h" using namespace std; const int MAXSIZE = 100; int records = 0; char Menu(); void ReadFile(); void DisplayRecs(); void AddRecord(); void SearchArray(); struct StudentRec { string Number; string GName; string FName; string subjects[4]; int results[4]; int numsubs; }; StudentRec StudentArray[MAXSIZE]; … |
 | How to pass an array of struct as a function parameter? This is not working: [CODE] struct Person { char* name; int age; Person(char* name, int age) { this->name = name; this->age = age; } } struct XYZ { int count; Person* people[]; XYZ(int count, Person* people[]) { this->count = … |
| | Hi, I have two Pthreads and two named semaphores, the semaphores are created within the threads, is there a way in which i can declare a semaphore in one thread and then open and use it in the other one ? Thanks |
| | I may not be understanding private inheritance right, but I thought when you inherited privately that you could still access public member data/functions, but the child class of the derived class would not. For some reason it is saying the public print() method is not accessable in this context....Is there … |
| | Before I ask the question I realize that selection of a programming language depends on the context of a problem at hand. Related to this I would like to know (if anyone) how many of you use which language for programming microcontrollers, embedded systems and even generally on PC. Here … |
| | I'm currently working on a program with linked lists. The program asks you to enter five integers, and every time you enter one that integer is added to the front of the list. My issue is that for each input, i need to insert the node at the beginning of … |
| | Write a C++ program that takes 2 characters (c and d), and a positive integer (n) and outputs the following drawing of size n n made of the characters c and d, as shown below: Enter two characters and an integer: # _ 6 #_#_#_ _#_#_# #_#_#_ _#_#_# #_#_#_ … |
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| | HII ... i was doing this program where i can enter student grades and the program will tell me like the over-roll grade .. and stuff .. i am almost done i think but i am stuck now soo plz if u can make this work plz help .. THANK … |
| | I am trying to edit this program to pass two variables to the function call using a passing-by-reference. I need help as to how to modify what I have. Any help would be appreciated. #include "stdafx.h" #include <iostream> using std::cout; using std::endl; int incr10(int& num); // Declare function int main(void) … |
| | Hello everybody, I am trying to communicate with a Vitamin Scanner from a computer, which connects via Comm port. It should do the equivalent thing of opening up 'Hyper Terminal', typing in 'a', hitting enter, then typing in '?I', enter, 'S', enter, and a long list of integers shows up … |
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