51,593 Topics
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 | Hi pals, I am newbie in C++ Development. I saw a code in a book named "Beginning C++ Game Programming". I have a doubt regarding the Following Working Code. [CODE]#include <iostream> #include <string> #include <vector> using namespace std; //returns a reference to a string string& refToElement(vector<string>& vec, int i); int …  |
| | I have a few been studying OOP for some time. I keep reading in almost every book that OOP was developed in order to write more complex software and has many features not available in procedural programming like code re usability, security, modularity, encapsulation etc. I haven't developed any real-world …  |
| | Hello everybody! I wrote an example about a copy constructor and the result wasn't what i expected. Here's the example: [CODE] #include <iostream> using namespace std; class A { public: A(const A& cp); A(double t[], int size); ~A(); double *getTab() const { return tab; } double *tab; int size; }; … |
| | How can I do this? I'm not even sure what the problem is so I can't really search google. Why is this not possible?: [CODE] #include <iostream> #include <cmath> using namespace std; void vGameLoop(); void vDoMenu(); void vDealMenu(); void vDoDeal(); int main(){ vGameLoop(); return 0; } class CCards{ const int … |
| | i have to declare an integer array, float array ,and character array of 85020 indexes..when im declaring it ..my compiler is giving error that array size is too large. please tell me how can i declare array of this size. [code] <iostream> <conio.h> int main() { int a[85020]; float b[85020]; …  |
| | I have written a program in Visual C++ Express. I have finally finished and that's why I wanted a release version of my program. To give to some of my friends. There was no problem when I used the compiler to create the debug version. But when I run the … |
| | okay, i don't have a problem coding the game... that part would be easy. but the problem is to output the lease number of rotations needed to complete the game, so for example... 123 => 413 456 => 526 789 => 789 (rotation of the top left corner) that's what … |
| | Hey I'm trying to set a Strategy in my program that should allow me to do something I've never tried before and have no idea if it's either the best approach to the problem or if it is possible or not. I have a class with some fields and one …  |
| | I need to create and array of DIFFERENT kinds of objects. For instance, in Java, I can do something like this ... [CODE] // scene objects Sphere scene_sphere = new Sphere(); Plane scene_plane = new Plane(); Object[] scene_objects = {scene_sphere, scene_plane}; [/CODE] in my program, both the Sphere class and … |
| | Hello all.. can any one please tell me..that how many null(s) i.e '\0' are in 2-Dimensional character array?? thanks. your quick response will be highly appreciated :) |
| | hi i need to write a program that connects to a device through Ethernet over the UDP protocal and get the data sent by the device. I tried using the .NET udp client methods but was unsuccessful. Can you guys help...this is my code.... [CODE] static void Main(string[] args) { … |
| | double i,j,k; k=(i%j); The program generates a error in second line and compiler show a message I can not use % in double variable. But I need to separate the each digit of a double variable how I can do this? |
| | Been doing a lot of reading picked up beginning c++ through game programming and c++ the complete reference 4th edition I haven't gotten very far into each of these, but I have managed to make a gui in c++. what I am wondering is how to retrieve data entered into … |
| | Dear all I have the following code [CODE] void initializeData() { Customers *CustArray; CustArray=new Customers[150];//allocate 150 memory locations of class Customers Flights *FL=new Flights[150]; } /*End Initialize Data fuction*/ /**********************************************************************************************************************************/ /*Backup Menu implementation*/ void backupfiledefaultfilename() { ofstream file_ptr; // Declares a file pointer. file_ptr.open(“backup.bak”, ios::out); if (!file_ptr) { cout << …  |
| | hiiiiiii all I need help to know what are equivalent libraries in c# for those in java--> 1)import java.sql.ResultSet; 2)import java.sql.Statement; 3)import java.util.Vector; 4)import java.util.Hashtable; 5)import javax.servlet.http.HttpSession; 6)import java.sql.SQLException; 7)import org.apache.velocity.Template; 8)import java.sql.Connection; Thanks In advance :) |
| | I am new to templates and trying to implement Templates for creating ITK images: template <class T,int D> itk::Image< T, D>:: Pointer CreateITKImage(int *pnSize, double *pdSpacing = NULL) { typedef itk::Image< T, D> ImageType; ImageType:: Pointer image = ImageType::New(); : : return image; } void main() { int Size[2] = … |
| | Dear all I have a function and withing I want to call a member funtion. More specifically I have a menu inplemented the code below. please note the commented line [CODE] case '1': //flightcode(); break; case '2': cout<<"Enter the Customers National Number ID"<<endl; cin>>ni; // CustArray.showCustomers(ni);//given the customers ID break; … |
| | The results of this program giving me values that should not be the way it is, it must display the list of numbers... [ICODE]#include <iostream> #include <fstream> using namespace std; void ReadList(int Array[], int N) { ifstream data_file; data_file.open("numbers.dat"); N=10; for(int i=0; i<N; i++) { data_file >> Array[i]; cout << … |
 | Hello all Currently i am developing my first game using Allegro 4.2.3 in C++. but i have got few problems/confusions 1.i want to use different font from that available by default. I have read there wiki and articles but i could not figure out any simple way. Specifically i would … |
| | 1)What's the safest way to receive data from a php script and return to an exe? 2)If I have lets say char Hi[4] = "3E2C"; and I wanted to put this into a BYTE Bye[2]; how would I do this so that Bye[0] = 0x3E and Bye[1] = 0x2C? Thanks …  |
| | [CODE="CPP"] int BattleSituation::getHPData(int player, int slot) { PokeBattle &p = this->poke(player,slot); return p.lifePoints(); } int callGetDataHP(const BattleSituation&situation, int id, int pokeslot) { return situation.getHPData(id, pokeslot); } QScriptValue ScriptEngine::getBattleData(int id, int pokeslot) { if(!loggedIn(id) || pokeslot < 1 || pokeslot > 6) { return myengine.undefinedValue(); }else{ return callGetDataHP(getHPData, id, pokeslot); } … |
| | About a year ago, I built a simple ray tracer in Java, and now I'm trying to port it to c++, but I can't figure out how to get a couple of my classes to work together. It should be fairly strait forward, but its not working. Here is a … |
 | 1. What is the purpose of using a DLL over a .lib or just a single .exe? 2. What exactly (in VC++) does __declspec(dllimport) and __declspec(dllexport) do and where would you use them? 3. What is the correct way of using and linking DLLs? 4. How do you export things … |
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| | Ok, The only reason I'm asking this is because I want to be absolutely clear on it. In C++, if I write [CODE]int* ipSomePointer;[/CODE] [B]Is this the same thing as:[/B] [CODE]int *ipSomePointer;[/CODE] [B]or[/B] [CODE]int& iSomeRef = ...;[/CODE] [CODE]int &iSomeRef = ...;[/CODE] It does give the same result as each other … |
| | I have some code I found that takes screenshots and saves them as a bitmap image. I'm trying to get it to save the screenshots as .jpg and I don't know how to. I don't want to use a large third party library if I don't have to, I would … |
| | hey...i have a code here[CODE]#include<iostream> #include<fstream> using namespace std; void Avgs(int Array[],int N,int& Ave,int& AveP,int& AveN){ AveP = 0; AveN =0; for(N=0,N<10,N++;;) Ave=Ave+ Array[N]; Ave=Ave/10; for(N=0,N<10,N++;;){ if (Array[N]>= 0) AveP= AveP+Array[N]; else AveN= AveN+Array[N]; } {AveP= AveP/6; AveN= AveN/4; } void Large(int Array[],int N, int& Big);{ int Big = 0; …  |
| | hello everyone my aim is to count different words from text file and write them to output file with the number of occurences.but my code didn't work,I don't know the mistake but I think my read and write functions cause the problem.any help or suggestions? [CODE] #include<iostream> #include<string> #include<fstream> #define … |
| | Hi, Can i use realloc to deallocate the memory allocated using new operator. For example: int * i = new int (10); realloc (i, 0); Thanks in advance. |
| | [CODE] #include <algorithm> #include <iostream> #include <Windows.h> #include <string> #include <cctype> using namespace std; int main(void) { //declare variables char npcname; char actid; //askin the user to input npc name cout << "Please Enter Your NPC Name!"<<endl; cin >> npcname; //askin the user to input action id cout << "Please … |
| | Dear guyz, I am creating a file archiver/extractor(like tar), using POSIX API system calls in C. I have done part of the archiving bit. I would like to know if any one could help me with some C source code(using above) to create [B]a file header for a file in … |
| | how can i merge the values of the arrays? if i get the values of each array in a file.txt and file2.txt [CODE] void ReadList() { ifstream fin; fin.open ("1.txt"); for(A=0; A<10; A++) fin >> Array[A]; fin.close(); ifstream fin2; fin2.open("2.txt"); for(B=0; B<20; B++) fin2 >> Array[B]; fin2.close(); N=A+B; cout << … |
| | [CODE]#include <algorithm> #include <iostream> #include <string> using namespace std; int main(void) { int actid; cin >> actid; if(actid != 1,2,3,4,5,6,7,8,9,0) { cout << "you must enter an integer"; return 0; } }[/CODE] but it's fail :( |
| | can you please explain to me why htese errors happen and what is the solutions for this...pleeeaaassee..:)) Problem: Write a C++ program which will read in a list of numbers, find the average of all numbers, the average of thepositive and negative numbers, and the largest element. Your program should … |
| | [CODE] #include<iostream> using namespace std; int main() { int* p=new int[2]; p[0]=1; p[1]=2; cout<<p[0]<<" "<<&p[0]<<endl; cout<<p[1]<<" "<<&p[1]<<endl; cout<<endl; cout<<*p<<" "<<p<<endl; p++; cout<<*p<<" "<<p<<endl; delete [] p; } [/CODE] the output of the above program is : 1 0xe502f0 2 0xe502f4 1 0xe502f0 2 0xe502f4 aborted(core dumped) can anyone pls tell … |
| | [CODE] #include <iostream> #include <string> using namespace std; int main(void) { string test; test="this is a test" test.replace(' ','~')// replace the space with ~ cout << test; return 0; } [/CODE] but it's not working can anyone help me? |
| | Ok, I am sort of new to C++, and I just came across something that I don't fully understand. [CODE]int main(){ int iX=5; { int iY=30; std::cout<<iY<<std::endl; } std::cout<<iX<<std::endl; return 0; }[/CODE] What does it mean when I make a code block with no if,else etc..? Does it just make … |
 | I've been using Visual Studio 2010 Ultimate to learn C++ and have created a project file. Within that project file are 2 .cpp files. I use one to refresh my memory of what I've learned and the other to enhance my knowledge of C++. The problem is that whenever I …  |
| | hi all i want to read a secific line in a text file here is the text file form [CODE]iphuc 0.6.1 with tab completion. >> By The iPhoneDev Team: nightwatch geohot ixtli warren nall mjc operator Unsupported iTunesMobileDevice.dll Version ee0000 15 CFRunLoop: Waiting for iPhone.[/CODE] or [CODE]iphuc 0.6.1 with tab … |
| | Is there someone who can help me with this? Write a C++ program which will read in a list of numbers, find the average of all numbers, the average of thepositive and negative numbers, and the largest element. Your program should contain at least four functions -- one to read … |
| | could someone help me, i dont know how to show the results... [CODE]#include <iostream> #include <fstream> using namespace std; int ReadList(int Array[], int N) { int list=0; for(N=0; N<10; N++) { list= Array[N]; } return list; } void Avgs (int Array[], int N, int &Ave, int &AveP, int &AveN) { … |
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 | Hi, This is my first post in daniweb! I've two questions: First question: I'm currently studying about classes, and could get '=' overloading format: [CODE][COLOR="Red"]T&[/COLOR] T::operator =(const T& b);[/CODE] Why we set it to return reference? what's the use? Why couldn't simply be: [CODE][COLOR="red"]void[/COLOR] T::operator =(const T& b);[/CODE] I've used … |
| | [CODE] #include<iostream> #include<fstream> using namespace std; int main() { char a='p'; int b=23; float c=45.67; ofstream out("test.txt"); out<<a<<" "<<&a<<endl; out<<b<<" "<<&b<<endl; out<<c<<" "<<&c<<endl; } [/CODE] the output for this is in the text file: p pα#a/ 23 0x22cd08 45.67 0x22cd04 why is the address of the character variable is very … |
| | hi guys ! i had this code snippet from the net...so i m trying to understand the code but m not getting those points plz help me 1.what does return 2,return 4,return 6 means in this code? 2.why we have case '#' ,why '#' opreator is assigned to stack[top]; 3.if(isoperator(symbol)==0) … |
| | hi guys I have a C++ code that works great, but when I want to modify, It gives an debug error. "invalid allocation size .... byte". what should I do? |
| | I've tried to make an implementation of a std::vector, but it has some bugs that I cannot figure out, for one, the Append (same as push_back) method doesn't work. If anyone could help me to find the bugs that would be appreciated. [code=c++] template< typename t > class vector_t{ t … |
| | I'm reading a book called Beginning Algorithms by Harris and Ross, which gives code examples in Java. As an academic exercise I am trying to convert the code examples to C++. In the interface below the part that throws me is the return of the 'Object' by the 'current' method. … |
| | I am using this as an example to show what I want to do. I have already done a char array like this: char name[10][10] = {"1. One", "2. Two", "3. Three", "4. Four", etc.. down to 24. I have already wrote the code, so all these 24 subarrays can … |
| | Im running a few tests for creating an MP3 player (very basic) and i'm having a few issues that I'm hoping somebody can help with. Right..... Im using mci for playback but what i need is the file path to be input by the user via a textbox. Ive created … |
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