49,765 Topics
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| | Hello, how can I make my program (I'm using dialog as main window) to "block" everything (like when u are running some program that needs admin permissions) so u won't be able to do anything until u select "yes" or "no" except minimize and exit + what's the message for …  |
| | Hi i would like to build a c++ game with SFML graphic library now i see sprites can move using floats ( sprite.move(+x,+y) ) how do i connect between the graph ( configured by a matrix ) and the graphic library? since the graphic library uses floats and set positions … |
| | You are the owner of a hardware store and need to keep an inventory that can tell you what different tools you have, how many of each you have on hand and the cost of each one. Write a program that initializes the random-access file hardware.dat to 100 empty records, … |
| | Error: Debug Assertion failed: Expression: BLOCK_TYPE_IS_VALID(pHead->nBlockUse) Code: #include "stdafx.h" #include<iostream> #include<stdlib.h> #using <System.dll> #include< math.h> #include< time.h> #include<List> using namespace System; using namespace System::Collections::Generic; using namespace System::Linq; int someSize=2000; # define SIZE 20 class queue { int aMsg[SIZE]; int front; int rear; public: queue(); ~queue(); void insertMessage(int i); int removeMessage(); …  |
| | Write a program to move a character around on the screen in response to user key-presses (you’ll have to decide which keys to use for up, down, left and right - combinations like t b f and h work well: or if you’re more ambitious you could find out the … |
| | #include<iostream.h> #include<conio.h> #include<math.h> void main() { clrscr(); int n,x,i,j; float p,fact=1.0,sum=0.0; cout<<"\n\tEnter the number: "; cin>>n; cout<<"\n\n\tEnter the Value of 'x': "; cin>>x; for(i=1;i<=n;i++) { for(j=(2*j-1);j>0;j--) { fact=j*fact; if(i%20==0) p=(-1)*pow(x,(2*i-1)); else p=pow(x,(2*i-1)); sum+=p/fact; } } cout<<"\n\tThe sum is "<<sum; getch(); }  |
| | In my program (not the compiler) how would I implement a 'tag' system, for example : dpkg [B]-i[/B] hello I am not skilled enough to go through gcc's or dpkg's sources so sone help would be nice.  |
| | Hi. I want to read through a file and search for variables saved in it. However if the stream reads the last char I got errors like EOF. For example the following code would not work as intended to : [CODE] bool BaseFileReader::Valid() const { if (!File.is_open()) std::cout << "\n\nERROR: … |
| | I have run this code below but it have a few error..hope someone could help me to solve this problem..tq..:) #include <stdio.h> #include <string.h> #include "cv.h" #include "cvaux.h" #include "highgui.h" int nTrainFaces=0; int nEigens=0; IplImage ** faceImgArr =0; CvMat * personNumTruthMat =0; IplImage * pAvgTrainImg = 0; IplImage ** eigenVector … |
| | I try to implement ford fulkerson algorithm but i have problems at my_alg function.I think the reason for this problem is find_edge function.since when i find the edge and increment its flow(asker_sayisi),at the next line it seems to be incremented but at the next line when i find the same …  |
 | hello, i want to get some guidance from the reader who read my post. I'm doing a game called deal or no deal using c++ and i can't think of other way to print the box's number instead of printing the value inside. what i want to do is, user …  |
| | [CODE]#include <iostream> #include <string> using namespace std; class shapes { protected: int width; int height; public: shapes() { width=0; height=0; } ~shapes() { } void getWidth() { cout<<"What is the width"<<endl; cin>>width; } void getHeight() { cout<<"What is the height"<<endl; cin>>height; } }; class rectangle:public shapes { public: void area() … |
| | i want to create dc++ hub using dynamic ip , because my ip is updated automatically after some period of time. I am using DSL(PPPoE) connection. If it is possible to make dc++ hub using dynamic ip then i want full instruction & help so that i can follow to … |
 | Hello everyone, I came across the following in a book: [CODE]Keyword typename The keyword typename was introduced to specify that the identifier that follows is a type. Consider the following example: template <class T> Class MyClass { typename T:: SubType * ptr; ... }; Here, typename is used to clarify … |
| | I found a good tutorial and added a few things to it such as text on screen using the TTF dll, the code worked fine before setting up the font and attempting to display it. I still get no errors or warnings it just compiles then closes instantly :(, no … |
| | How do interpreters do it? I've seen bots for games that encrypt files then decrypt them at runtime and run what's in them.. Well How? How can I do this in C++? I plan to do this in another language but I decided to ask in C++ section because this … |
| | I've got a linklist class and would like to have the ability to create a new node that can instantiate it's own new linklist. (some what of a multidimensional link list) I've tried the line: linklist *self = this; but my program crashes when i exit. any thoughts? |
| | Hi everybody, I have a crazy problem with a basic calculator. [CODE]#include <iostream> using namespace std; main (){ int num; int y; int ans; cin >> num; for (int x = 0;x < num;++x){ cin >> y; ans += y; cout << ans << endl; } } [/CODE] it take … |
 | Is there any reason you would want to write your own RTTI system for use in your code, when there already is one in C++?  |
| | HI, dears, Can any 1 help me in writing the following program.. i cant do it. so can any1 help me. > Write C++ program that calculates the following Total Runs Total Balls 6s 4s 3s 2s 1s 0s S/R Avg m waiting fr this. This Program is About Cricket … |
| | I wanna know what type of parser is used in the gcc and turbo c++ compilers. whether a top-down or bottom-up parser is used..... ? |
| | Hi guys, I'm writing a weasel program and needed a random character generator, I used a random number generator to give an ascii code for each character, and made a sequence of them, then I realized I needed to include the "space" symbol, but upon inclusion of the new code … |
| | I am in an 11th grade computer science class learning C++ and I feel that the class is going to end before I learn how to apply C++. What I want to know is what do I need to learn to start applying C++ into tasks like software development, game … |
 | Hello people I heard, that c++ is more powerful than c and i want to learn one of them. I want to know if it is better idea to start with C or with C++ without learning C. I know a bit of C# (i can make some basic games …  |
| | Hello. I need some help with variable types. I am currently an 11th grader taking my first Computer science class. I am learning C++ and I would like to know how I can make 10/3 3.33 rather than 3 in C++. For example, a member on the forums updated my …  |
 | I read that using a policy class for a function that will be called in a tight loop is much faster than using a polymorphic function. However, I setup this demo and the timing indicates that it is exactly the opposite!? The policy version takes between 2-3x longer than the … |
| | Hello, and happy new year first of all. What I am trying to do is make a program that according to the values the user inputs then displays a polynomial. The forumla for the polynomial is this: [code]float par(float x) //H timh ths synarthshs sto shmeio Xo { float tel=trap[0][1], … |
| | hi everybody, the double type is 8B, right ? So if i use this code : [CODE]double pear[500000000];[/CODE] it will use 4GB of Ram ? or there's a limit for arrays ? thanks |
| | I have a feeling that I can come up with a much better title for this thread once I know the answer to this question :). Say I have a function template template <typename T> void MyFunction(). Now I want to specialize MyFunction for a templated type. That is, say … |
| | I don't know should I post this article at here or not, if you think this should belongs to other area, please move it to there. I need to design some domain specific language to generate some C++ source codes. I have considered about using xml directly instead of designing … |
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