49,766 Topics
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| | I am trying to overload << for a class complex. The code is: INTERFACE: [code=cplusplus] class complex { friend ostream& operator<<(ostream& output, const complex& V); private: double REAL; double IMG; public: complex(); ~complex(); }; [/code] IMPLEMENTATION of <<: [code=cplusplus] ostream& operator<<(ostream& output, const complex& V) { output<<"("<<V.REAL<< "," << V.IMG<<")"; … |
| | I was trying to do the practice problems but don't understand what the first beginner or first intermediate problem is asking me to do Write a program which finds the factorial of a number entered by the user. (check for all conditions) (Beginner). Create a simple Palindrome checker program. The … |
| | I have the ambition to make a List, Global so it can be reached within other Threads. When compiling the code with the declared list like this the compiler says: [I]syntax error : missing ';' before '<'[/I] Should I declare the List in any other way than this ? (The … |
| | Hello, I have recently started learning how to write games in DirectX 9 and I have a few questions. The first is about backwards compatibility. Is it correct to assume that if someone has DirectX 10 installed that they can play DirectX 9 stuff without downloading DirectX 9? Also, I … |
| | I have put about 30 trasparent buttons on a Form wich meens that all these buttons are invisible. When I open this Form, you will see all these trasparent/ invisible buttoncontrols "flicker" in a white color. This flickering process takes about 2 seconds until the Form is 'ready'. What does … |
| | I want to write a 3D virtual environment in c++ that can display videos on sides of a cube (using openGL is preferable). Also it has multi client and connect to the server that has a database of videos. the program should work online and can be displayed in web …  |
| | Hello, I'm trying to solve an assignment that I have, but I don't want to get into the details of the assignment and confuse everyone. But, the basic idea is that I have to read a file, containing a list of team names and information about matches, and then I'd … |
| | Hi all. I'm having a difficult time working with visual studio 6.0. I have a project which i'm editing, and i need to add a combobox to a form. The problem is i've added items to the combobox throught it's properties, and yet when i run the program, only the … |
| | Hi i am trying to understand manipulators. Can someone explain what is happening here [code=C++] for (int i = 0; i < n; i++) { cout << setiosflags(ios::left) << setw(15) << item[i] << setw(8) << setprecision(0) << code[i] << setiosflags(ios::right) << setw(8) << setprecision(2) << setiosflags(ios::fixed | ios::showpoint) << cost[i] … |
| | Hi, I have given only some part of the code related to my problem. I have problem while compliation. I have the problem in the constructor of the class RMstore. i Get the following compilation error rmremote_server.cpp: In function `int main()': rmremote_server.cpp:196: error: no matching function for call to `RMStore::RMStore(std::string)' …  |
 | What I want to do is make a grading system. There is a vector for schools and classes and students, all of these which have their own class, derived from a class called system. [CODE]class System{ School * p; //School Pointer vector<School>sSort; public: //Splash Screen Function void Splash(); }; /*-School … |
 | I'm learning c++ at the moment, and i just learnt about classes, so i decided to make a text game with a badguy and player class, and i was wondering how to refer to other classes variables(like this.health) from other classes. and wether you have to create an instance of … |
| | i have also similar problem with getline : [CODE]int Books::InsertBook() { string authorName; cout << "id_code :" << endl; cin >> bookrec.id_code; cout << "info_title :" << endl; cin >> bookrec.info_title; cout << "author :" << endl; getline(cin,authorName); int authorID = train_Author::s_add_author(authorName); if(authorID==0) { cout<< "Operation cancelled!" << endl; return … |
| | Hello, I am very new to programming and want to know if anyone knows of a good internship or course that they recommend, near San Diego California preferably. Also any seminars or useful websites that would broaden my IT/programming knowledge. |
| | hello, I just wanted your input on this program(can it be more efficent?...and so on ). It's a simple program. It reads 5 integers and checks if its an palindrom or not. As you can see I am a beginner. here is my code: [code] #include<iostream> //#include<string> //#include<ctime> //#include<cstdlib> //#include< … |
| | I know I can call another _Click event using this code: [code] button1_Click(this, EventArgs::Empty); [/code] But if I want to call a _Paint Event, this code will not compile. Is it different to call a Paintevent then a Clickevent or other events ? cannot convert parameter 2 from 'System::EventArgs ^' … |
| | With this code I am setting a backgroundimage to a button. [code] mybutton1->BackgroundImage = Image::FromFile("D:\\pic1.JPG"); [/code] What I need to do is to also be able to remove this image from the button as it was before I did put the image to the button so the button doesn´t have … |
| | I've just wrote this program and when i compile, the gets() function is skip before i can enter the string. i have try cin.getline but the same problem occurs. Can anybody tells me what's the problem and to solve it? [code] #include<iostream> #include<cctype> using namespace std; int main () { …  |
| | when someone include <iostream> how does the compiler know which library to load? |
| | I am trying to write a function that reads numbers out of a string of comma separated values. The first function is: [code=cplusplus] unsigned get_frame(unsigned &index, char input[]) { const comma=','; char *letter; char *accum=""; unsigned out; while (input[index]!=comma) { *letter=input[index]; strcat(accum,letter); index++; }; out=atoi(accum); index++; return(out); }; [/code] This … |
| | Hi How to convert CString to char* in C++ Regards Karan |
| | I want to ask user to input two parameters of one product and I want both of them to go on the same line. However, I also want to have some text between the values that user inputs. So, I want to have something like this: 1) Initial text: "Oil … |
| | To get things started, I am re-writing an application that I originally wrote in perl. So I am some what sticking with the same concept as I did for the perl version. This application uses multithreading in order to handle multiple configurations and data streams. At this point, I have … |
 | This code here is giving segmentation fault. Any clues why? also any general tips for writing good multi-threaded code are welcome. [code=c++] #include <windows.h> #include <process.h> #include <iostream> using namespace std; unsigned __stdcall Display(void* p) { Sleep(500); cout << "Display" << endl; cout << *((int*)p) << endl; return 0; } …  |
| | hello, i have just started trying to learn c++ and have been told to create a game of connect four player vs comp. i have managed very little and am stuck on trying to get the computer to recognise that when the cell is occupied rather than not put the … |
| | how it is logical to get this to work? [CODE]#include <iostream> using namespace std; int main() { int a; if(a = 0) { cout<< "oldu" << endl; } else { cout << "olmadi" << endl; } return 0; }[/CODE] whereas in c# you can not do something like below : … |
| | Hello! I muss create a diamond shape, with 4 (triangles). The first 2 i was able to make it, but 2 others not. So i need some beginners help. [code] //* //** //*** //**** //***** for (int i=0;i<value-1;i++) { for (int j=0;j<=i;j++) { cout<<"*"; } cout<<endl; } for(int a=0; a<value; … |
| | I need to use an array of chars to input chars from the console but I don't know how many chars will be actually inputed. How can I have an array of chars whithout knowing its size in advance? I could put the array with a very high size but … |
| | Hi all, I am making a text game in c++ and i am trying to get the player's attack to ba a random number between 1 and 7, but when i try to compile it, it gives me this error: 49 C:\Documents and Settings\Games\Desktop\C++ Tutorial\Combat\main.cpp void value not ignored as … |
| | Hi I have a value of emdash — First of all I want to know Is this — a unicode If Yes How to convert unicode i.e. — into -- using code in VC++ Regards Karan |
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