51,593 Topics
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| | I have a question about how the message loop works in a windows application [code] while ( GetMessage(&msg, NULL, 0, 0) ) { TranslateMessage(&msg); DispatchMessage(&msg); } [/code] Does the windows o/s maintain a message queue that the app retrieves a message from the front of then dispatch it bck to …  |
 | runtime error "not recognized as an internal or external command, operable program or batch file" # include <stdio.h> # include <stdlib.h> # include "iostream" using namespace std; int main() { char ch; cout<<"Do you want to Logoff your computer now(y / n) \n " ; cin >> ch; if (ch … |
 | Hey guys ! I hope I'm not posting this topic in wrong place . I'm new to DaniWeb forum , although I've been previously following certain articles as a guest . Anyway , let's get to bussines . I have this problem , as titles says , I need to … |
| | 1)How would you give a short and good explaination to someone who is a beginner in programming of the following * short * long * typedef * const  |
| | So i have to write a c++ program for the Graeffe's square root method I have am stuck here when i have this formula transform into c++ code, the formula is on the link The code works particulary, the (elem[j-1]*elem[j+i]) doesn't work, it's beeing ignored and i don't know why... … |
| | I've created: #include <streambuf> #include <iostream> #include <windows.h> template<typename T> class BufferedStream : T { private: T &stream; std::streambuf* buffer; //planning to use this to create other "IO" functions. public: BufferedStream(T &stream) : stream(stream), buffer(stream.rdbuf()) {} ~BufferedStream() {stream.rdbuf(this->buffer);}; std::ostream& operator << (const char* data); std::ostream& operator << (const std::string &data); …  |
| | an int function cube () that returns the cube of its single int formal parameter please attach in my emile bmekixavi@gmail.com |
| | The part for(int i=1; i<n; i++) { x[i]=sqrt(y[i]*i); cout<<"x"<<i<<": "<<x[i]<<endl; } isn't working wll, for some elements the result is non, i thought that i because the numbers are complex, but not with include complex i get the same resut.. can anyone help me #include<iostream> #include<math.h> #include <complex> using namespace …  |
 | Hi, I have developed windows application on windows 7, when I deployed it to windows vista it has stopped working but it run smoothly on windows 7. Can anyone help me? Thanks.  |
| | how would i write a function that parses a hex number as a string into a decimal integer. I have the following done i just need help finishing it. any help will be appreciated[code]#include <iostream> #include <string> using namespace std; int parseHex(const string &hexString) int main() { cout << "Enter … |
| | I am new to CPPUnit testing and have written test for login authentication function with various test cases. But it only accepts return value zero. The first test case should return 1 if expected and actual are the same but it only works when I change to zero. Any advice … |
 | i need help to make this program please help me Problem Statement: Write a program using class(constructor, destructor, other member functions) to find the frequency of letters (small and capital alphabet or digit) from your student id character string. For example, frequency of letter ‘4’ in the string of a … |
 | not sure where to post this but anyways I wrote this code to calculate the max profit from a 5 kg max weight. heres the code. there is an error with the price. when I use small values below 20 its all normal but when I input large values there … |
| | hi, I am bigjam and I want to become good in game development using c++. pls what advice can u give me?.  |
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| | Hello!! So I just started moving over from Java to C++ and am having problems. All I am trying to do is make a simple MessageBox and when I try to run this code: #include <windows.h> int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd){ MessageBox(NULL, L"Hello World!", L"Hello …  |
| | Below is my code so far that ask user for how many numbers they want to input. This program can calculate average based on the numbers that the user input but I also need it to find the product or multiplication of all the numbers entered. I know how to … |
 | How do I add second element ? right now it works and I get output of 13, but lets say I want list of 2 elements, how do I do that ? here's my code : #include <iostream> using namespace std; struct Vagon{ int num; Vagon *p_next_num; }; int main() …  |
| | 1 12 123 1234 12345 ******** ******* ****** ***** **** *** ** * 12345 1234 123 12 1 |
| | File does not work.Does not record information.Please help! -Enter of a keyboard and a file into an array (by adding) data to 30 girls #include <iostream> #include<fstream> #include <stdio.h> #include <stdlib.h> #include <string> using namespace std; #define N 30 FILE *fp; struct girl { char number[10]; int age; int bust …  |
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 | Assume that I have a vector: x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14] What I need to do is split this vector into block sizes of `blocksize` with an `overlap` `blocksize = 4` `overlap = 2` The result, would be a …  |
 | Hi, I'm now studying Bachelor of Science in Information Technology. I want to ask everyone if I can count on you if I ever bump into some problems coding. I'm new to programming. Thank you. |
| | I am using c++ with sqlite3 I have a database(test.db) with a table of testTable inside the testTable it has the following attribute _id|randomText I tried inserting a randomText into the database after my input but it's not inserting into the database. my code http://pastebin.com/TvuNqFsF need help. thanks |
| | can anyone help me to create a program that alows me to make a regular conversation with the computer? |
| | i just want to whether there is a replacement for getch() in C++. my friend said getch() is C function. thanks!  |
| | so if I have const int SIZE = 4; and a while loop const int SIZE = 4; int counter = 0; while(true) { // do something ... if(SIZE == counter+1) {cout << "Hello world"} } why is this not working? and how is the right way to do it? |
| | This is the problem: Write a class whose constructor takes a vector of Student objects, where each Student has a name of type string and a score of type int. The class internally stores the data passed to it in its constructor. The class should have an overloaded output operator …  |
 | I want this program to wait untill I copy some text into my clipboard. This is what I have done so far char text[500] ; HANDLE clip ; if ( OpenClipboard (NULL) ) cout << "\nClipboard opened" ; EmptyClipboard () ; cout << "\nStart" ; while ( true ) { … |
| | Hello Every body My question is very simple for you all experts, as I am learning how to write C++ program. I need a code for summing up the 4 corner of 2D array in turbo C++. Thank you all with regards |
 | Hi All, I got this code from a forum & tried it on g++/Linux. In the code below i put NULL to a pointer variable but didnt get any errors. #include <iostream> using namespace std; class A { private: int _dmember; public: void func() { cout<<"Inside A!! "<<endl; cout<<_dmember; // … |
| | As any experienced programmer must know the famous problem of "Edit Distance", however this problem is considered an “alternating chain” if you have alternately made case sensitive. Example: "AaAaAbB" "B" "a" "aBaCdEf" Alternating chains are considered in our problem. We only have one operation that is permitted in exchange for … |
| | Can somebody please tell me what is wrong in here or what does this error message means : " error : reguest for member 'name' in 'person',which is of non-class type 'Person[2]' " struct Person{ int days; string name; }; const int size = 2; bool way_to_Sort(const Person &a, const …  |
| | Please can somebody help me with the line of codes of this question:write a C++ program which inputs litre consumption given in miles/gallon and which translates these figures into the litres/kilometre format which is more common in Europe.Use the following conversion factors: 1 mile=1.609km and 1 gallon= 3.785litres  |
| | I am using visual studio 2013. I am just a Beginner. Trying to make a shutdown Program in c++. its give the errors. 'Shutdown.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file. 'Shutdown.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file. 'Shutdown.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot … |
| | Hi, I am trying to prepare a shared library using another shared library. but the second shared library does not contian the definations of funtions which are defined in first shared library. lets say i have libfirst.so. in this there are no undefined functions. while creating libsecond.so, i am linking …  |
| | Hello! I have a exercise about matrices. here is the question: is given a square matrix [M] [N] which determines the amount of each column. Thank u! |
| | Let me try to explain a problem I have.I have built array of structures that contains int(num of days) and string(Name).So basicy user should enter name of a friend and days they last talked,and then make a list sorted by the names of the friends of by how recently it … |
| | Okay so I'm kinda stumped... here are our directions.. My code is at the bottom of this post "Write a program consisting of only the main function, called piApproximator.cpp. When your program begins, the user is prompted to enter a number n representing the number of terms to be used … |
| | i just want to ask, why we need to declare the header on the upper part of our syntax. |
 | Hi I'm having a little trouble understanding C++ string arguments if that's what you call them. The below example illustrates. I'm not sure I understand what line 14 does. The vector 'myvector' is passed to myfunction (called on line 35. I'm assuming string w takes in the first value of … |
 | I wrote this function I plan on using to load in .obj files from Blender into a DirectX application. The problem I'm having is that when when the model is loaded, it appears that every other triangle face is missing in a pattern, for every quad, only 1 traingle is … |
| | Hello, I'm trying to approach .dll's. Tried some tutorials and got into 2 problems: 1. Using rundll32 from the command line is not working as expected. I write in cmd: "rundll32 mydll.dll MsgBox -32". It shows the MessageBox with text "15991798", changing every time I run it. 2. Calling a … |
 | I need the programs to these algorithms. These are the algorithms of the programs of Insertion & Deletion. I need the C++ programs. Insertion temp1 & temp2 are strings 1. temp1= substring (T, 0, ip) 2. temp2= substring (T, ip, length(T) - ip + 1) 3. concatenate (temp1, P) 4. … |
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| | Hey guys :) Can anyone show me a tutorial for game development in C++. Btw I'm on a mac so I can't go to the DirectX tutorial. Can you please avoid www.cprogramming.com because I dont like it. Thanx anyways :)  |
 | I'm trying to run a binary sort that sorts through a list of randomly generated numbers, but for some reason isn't working. It will usually tell me if the highest or lowest numbers are in the array, but acts like a spaz on the middle ones. I keep fiddling with … |
 | i want to write a program of 10 bank account users. then i want a help , how i write a program. in program i need a print or out put of 10 bank user like name,account no,branch no,account amount. if user press Yes then it gives the out put … |
| | Hi, Is there any way in C++ to select and read the last modified file from a unix directory? Let say the o/p of the ls -t is : abc.txt myfile.txt .... .... last_file.txt I want to select this last file ( can be of any name) and read the … |
| | Hi all, I would like to pose a design pattern to discussion that is achieved in two different ways. Imagine the situation where you have an interface "IFoo" (aka virtual) and implementations "FooA", "FooB", ... that inherit and implement "IFoo". Now you want the user (of the library you are … |
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