51,593 Topics
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| | i have below code , now i want to calculate the frequency of each letter which a function contain an array of alphabets use Pointer to a function principle i want to use pointer to find Frequency .... i have a little bit information about pointer but i don't know …  |
| | Hi guys, I'm writing a small piece of code that will allow the user to input a sentance, and will return the sentance in all uppercase characters. The problem is, as soon as a "space" character is entered the program considers the input to be finished. I don't understand why. … |
| | In working on a logfile for an application, I needed to limit the size of the logfile to 1000 bytes. Since it is not possible to delete lines from a file in C++, I used the following steps: Rename the logfile to a temporary name. Read the temporary file. Write … |
| | Hello, Here is my example code: [CODE]// Main.h #ifndef MAIN_H #define MAIN_H #include <iostream> using namespace std; #include <string.h> string HelloWorld = "Hello World!\n"; void HelloEarth(); #endif [/CODE] [CODE]// Main.cpp #include "Main.h" int main() { cout << HelloWorld; HelloEarth(); }[/CODE] [CODE]// Secondary.cpp #include "Main.h" void HelloEarth() { cout << HelloWorld; …  |
 | How can I get the coordinates of the output of a truetype font. I need to write a function like so: [CODE]struct CartesianCoord{float x,float y}; CartesionCoord *printfont(const char *filename,char ch, int &len) { /*Read the font in filename.ttf and convert it to a set of vertices describing the resulting shape. … |
| | Hi Is there any way , memory leaks can be clogged in c/c++ ... Are there any good tutorials on how can we make our code Memory Leak free ??/ Best Regards -Varun  |
| | Is there a C++ command that restarts the application. The program I'm making is just a console application that acts like a calculator. But once you enter your number and press enter you have to close the console and re-open it to find another number. [CODE] int yes = ; …  |
| | hello i'm writing a program in c++ and i'm using linux. i use fork() in order to create a process and then i want to wait for the child process to finish so its something like that: [CODE]pid=fork(); if(pid<0) { cerr << "Failed to fork" << endl; exit(1); } if(pid==0){ … |
| | hello, My program works fine but I want every time that the user add a character int the calculation section the program will print an error message and will ask the user again... I have try a lot of different things but nothing helps me... for example static_cast() and other … |
| | Hi, I have a very basic knowledge in C/C++, I need help in converting HEX value to readable values. I hope some one would give me a clear answer and make it understandable also so that i could learn from it.. thanks |
| | I have the following situation for multithreading in C++: Struct MyData { …. } //Class to create a thread specific data Class MiscData { public: CList<CPtrArray, MyData*> myDataList; HANDLE m_dbHanle; String m_SQLCmd; MiscData () { m_dbHandle = DatabaseConnect(connection parameters); } inline FillMyDataList(MyData* data) { myData* pData = allocate memory; pData … |
| | I want to learn multithreading in C++. somewhere on internet I got a piece of code using popen() function of stdio.h. I just wanted to know that if this function helps in creating the new threads or it doesn't come under multithreading. Please guide me in multithreading.  |
| | Im new in C++ im just wondering how to use two if statement with else in the same source project because when im doing it the part 2 else go together with else1 |
| | OK, so I am in my 1st semester of C++. I have already finished my 1st assignment (below), a Windows32 Console Application and it works just fine. However, if I write the program as a Windows Forms Application with a GUI, then I can earn extra credit. My problem is … |
| | can anyone help me in dividing the opengl viewport into two equal parts so that i display my primitives in the left and black out the right side part... |
| | now i am working on an exercise that asks to write this without recursion.... can anyone guide me to what i can do to make this work? i dont want anyone to do it for me but help would be appreciated. [CODE]/* #include <cmath> using namespace std; void getAllDivisors(int n); … |
| | Hi, I am currently trying to create a gui program that when you click one button, it executes Net Pause (service), and then the second button executes Net Continue (service), could anyone tell me what code I need to use in order to do this? If it helps, I am … |
| | My teacher assigned the class this: Create a simple Game Loop for the game Mastermind. (Search the Internet to refresh your mind on how Mastermind is set up.) Have your computer generate a random 5 digit number, as a string. Then the user must guess the number. Using the code: … |
| | Hi everyone, Im new to the community and was just wondering if I could get some help :) I have an assignment where i have to create a program for a shipping company and I was wondering if someone could help me with the coding to assign the sum of … |
 | Hello, I'm working with files in a C++ project AND the text file that I need to open is in the same directory, however when just trying to open it like this: [code] string inputFile = "myText.txt"; [/code] It will not open, even though it's in the same directory, so …  |
| | [CODE]#include <iostream> using namespace std; class X{ public: int p; }; int main(){ int b; X obj; int X::*ptr = &X::p; obj.p = 100; cout<<obj.p<<endl; cout<<ptr<<endl; cout<<obj.*ptr<<endl; system("pause"); return 0; }[/CODE] When i run this program, i get the output as: 100 1 100. I understand why it shows 100...but …  |
 | So I can set a global low level keyboard hook from within a DLL pretty easily, but does it actually load that DLL into every process? How is it then, "Global" ? Any useful insight into the way this works? I use the command line program "tasklist" with the /M … |
| | // I want to make a program having Queue class where message class instances are being used as messages. Later I want to use another class exchange that takes the messages and distribute to the Queue according to messageID. if message id is "111" the Queue named Q11 should be … |
| | I am having trouble writing a binary search code to search through my string array. I have the user enter the name of a search engine (engine) they want to locate and my binary search function searches through my string array. Here is my code... [CODE] //****************************************************************************** //This function uses … |
| | I am running a program created using [B][B]Visual C++ 2010 [U][U]Express[/U][/U][/B][/B]. I have several dialog boxes to read input data. One works perfectly, but a second one simply does not read any data at all, and I cannot figure out why. The two dialogs are defined as [CODE] LANGUAGE LANG_NEUTRAL, … |
 | Hi, I am creating the game which has a lot of images which present buttons and their different "surfaces" which depend of cursor ( move over it, click, mouse up... ). It's really boring to add so many options, to make the button look like Vista-style, so is there any … |
| | I'm trying to convert my C# class library over to C++ and was wondering if this is how scientific notation should look. Any pointers would be nice. [code]// Scientific Notation? private int i = 0; private string Sign = ""; public string Output = ""; public void Sci(double x) { …  |
| | Hi guys i've been stuck by this program for a while... Although you might find it easy,, but i'm still a beginner on c++ so please please help me on this program.. Write a program that will display a pattern depending on the value of n entered by the user. … |
| | is it possible to pass this to a function? it's size is configured at runtime. for example, [CODE] void test(string s[][]) { return; } int main() { int x, y; cin >> x >> y; string s[x][y]; test(s); return 0; } [/CODE] |
| | Im trying to cin >> a string consisted of numbers and letters such as 3j4583 and storing each separate char to a separate index of an array can u help provide the proper syntax? |
| | I'm a student just starting my first C# class in school, our first assignment was to make a simple console app to convert temperatures from Fahrenheit to Celsius. Being the over-achiever that I am, I decided to make a second project and create a form app. It's a very simple … |
| | If I have a file(.txt) that i read in that contains the following : [ICODE] * [111]IPOD FOR SALE 01 Jan 2012 in [1]Mobile by [325]se Submit | $300.00 [102]iphone 11 Jan 2012 in [1]Mobile by [22]aa Submit | $600.00 * [/ICODE] how do i extract the relevant data using … |
| | Hello forum, I need help with my first assignment regarding classes. I have no clue where to start so if possible could you please walk me through the best logical process to solve this assignment. I have no clue where to start so any information will help. Here is what … |
| | Im trying to take input data from a user as a string of number or letters and store each char on a different array, whats the proper syntax fro this? |
| | Hi people, I need to change return type of a function. So function should return array values.In here, data type of the array values are not int,char or double. The data type of the array values are a kind of custom type. So confused. Please help:scared::idea::( [CODE] [COLOR="Red"]void [/COLOR]DataType_Class::insert_rowData_into_array() { … |
| | I need to override the Close button an a C++/CLI Form application, allowing the user to cancel the close. This must have been asked a zillion times, but I can't find an example specific to C++/CLI Form applications. My Form class starts with: [code]namespace TR31Forms { using namespace System; using … |
| | I have a base class and a derived class. The base class has an int called a that needs to be initialized. I want to create an instance of the derived class, so I call its constructor and pass it an int. I want that to call the base's constructor … |
| | I'm trying to pass a list from a function to another using templates but get this error message: [QUOTE]/home/mattias/CodeBlocks/SpelBeta/src/player.cpp|64|undefined reference to `void Ground::bulletsCollition<Bullet>(std::list<Bullet, std::allocator<Bullet> >)'|[/QUOTE] Here is the code: [CODE] //In the function calling the template function (*blocks).bulletsCollition(player_bullets.getList()); //In header that the getList is declared #ifndef BULLETLIST_H #define BULLETLIST_H #include …  |
| | Hi all, I just need the array type of Person object. So it will be an array object. Please some help. [CODE] void SomeOtherFunction() { MyDataType ^Person = gcnew MyDataType(); // simple Person object (C++/CLI) } [/CODE] |
| | I recently obtained an HP Touchpad 32 GB, and I'm wanting to develop applications for it. I'm currently downloading the webOS SDK/PDK installer, and have finished downloading Virtual Box. I have the latest version of Java installed as well. What I'm wanting to know, is that I've read that we … |
| | i tested the following code as my teacher told me but it wont do what i want it to [CODE] vector<GameObjects*> blockers; blockers.push_back(new Wall(pictures,i,j)); vector<GameObjects*>::iterator k = blockers.begin(); for(;k != blockers.end(); k++){ cout << typeid(**k).name() << endl; } [/CODE] what i want to get is "Class Wall" but i only … |
| | [CODE]#include <iostream> #include <cmath> #include <iomanip> using namespace std; int triangleType(double x1, double y1, double x2, double y2, double x3, double y3); double distance(double a1, double b1, double a2, double b2); int main() { double x1, y1, x2, y2, x3, y3; cout << "Enter vertices for the triangle." << endl; … |
| | Hello i need to write a program read a text file and store the data with text in the format of : name 14 6 name2 15 26 However i cannot use fopen() scanf() getline() or fgets(), it has to be done with only open() read() and strtok() i have … |
 | Hi! "OBJECT is an instance of a class" then where is the object in the following code please........ [CODE]class A { int a; int b; public: void display() { cout<<"where is the object?"; };[/CODE]  |
| | How can I detect 3D Images? These images rotate in every direction in a game and I want to be able to detect them and click the right ones. Where would I start? I was thinking just loading a lot of bitmaps and somehow making a 3D image of it … |
 | I've search the forums here and found a few other people with the same problem I have, but I'm not sure I understand the solutions that have been presented. I have a simple geometry calculator I'm working on as C++ practice. My program displays a menu and asks for the … |
 | Essentially, I'm learning how emulators work. I've got the core down, but I wanted to know if I'm actually doing this the right way, or if I should be doing it differently. [CODE]#include <stdio.h> // Opcode + Argument Retriever #define GetOpCodeControl1(x) (x>>14) #define GetOpCodeControl2(x) ((x>>12)&0x3) #define GetOpCode0Arg(x) (x&0x0FFF) #define GetOpCode1Arg(x) … |
| | Basically I dont even know if I named the thread properly but lets get on the story. I've got a list of wares (in text file) with its name, date it was brought to store, date it was sold, amount and price. [CODE]Pigema //name date it was brought sold amount …  |
| | compiler : visual c++ 2005 os : win7 64bits The more I study about our source codes, the more dense fogs surround my head. According to what I know, memset can't be used to initialize POD This is the snippet of our codes(The problem of encapsulation? there are too many … |
| | Hi gang, I've created an object array from a managed class. [CODE] array<MyDataType_Class^> ^Object = gcnew array <MyDataType_Class^> (3); Object[1] = gcnew MyDataType_Class; Object[1]->id = 1; Object[1]->surnmame = "Formen"; TextBox1->AppendText(ConvertToString(Object[1]->surname)); // Outputs "Formen" + [/CODE] The object works well and outputs expected results. However what i need is : [U]Calling … |
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