49,765 Topics
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 | Hi, I noticed a few snippets recently where a size_t variable was used for array indices, and after searching around I'm still not sure what the obvious advantage of using a size_t variable over a typical int would be.. To clarify, what would be the difference between this: [code=cplusplus] for(size_t … |
| | Hi! I am using the Microsoft Visual Studio to build a program that has several threads. The threads communicate among them reading a shared variable; thus, a thread is waiting: "while (variable == 0);", until other thread puts the variable into 1. That occurs more than one time in the … |
| | Hi I have a problem, I hope you can help me with. I have a number, which I need to compare to some values. I do not wish to go through all the values, and compare them individually, as I there are too many for it to be efficient. Neither … |
| | I've been trying to get started with sockets programming. However, when I try to use the getaddrinfo and freeaddrinfo functions, my linker complains that they are "not declared in this scope" and that they are "unused variables". I have checked the header (ws2tcpip.h) and the headers appear to be declared … |
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 | what is the difference between openGL glut and openGL? |
| | I'm a total newbie and.. with the code above.. What I want to do is have 10 dValue numbers, but if, of those 10 I only enter 5 values, the exe shouldnt ask me to enter all 10 and just add the 5 values I entered when I press the … |
| | Hi, How can I convert the TeMyEnumeration constants to integer values? See code below [CODE] typedef enum{ zero, one }TeMyEnumeration; typedef struct{ TeMyEnumeration myEnumeration; int myInteger; } [/CODE] I send this complete structure, byte by byte, using a memory pointer to some serial output. I want the myEnumeration variables also … |
| | Hi, I'm hoping someone can help! I'm writing a sign language tutor that displays a video of someone signing and then expects the user to record themselves performing the same sign. The program works perfectly when run through Visual C++ 2008 Express Edition. However, if the .exe file is run … |
| | help me with the linked list where we have parkinglot ,with class apassenger,class acar,class aParking area.the program should register passenger, driver,car also able to remove a car in parking area[code]limplementing a linked list[/code]  |
| | Well. I've been developing a small game. This is what I have done: I've created a Engine project, which has these files in it: Geometry.h Engine.h Engine.cpp Now, I've created another project, called Test, and it has only one file in it: Main.cpp. I've included the Engine.h by modifying the … |
| | I'm having some real problem with a list of objects. My objects in this case are called Aircraft & I've given them these features: [CODE] int flightNo; void setFlightNo(int i) { flightNo = i; } int getFlightNo() { return flightNo; } [/CODE] Ok, all good - until I put them … |
| | hmm.. i have just a bit of experience in c++ and i'm just coding a program to learn. it is a windows forms app and there are 3 forms in one same project. how do i get a textbox value from one form and use it as a variable in … |
| | [B]* please help me to download the file (inpout32) form the page ( [url]http://www.logix4u.net[/url] ) becuase : [/B] * when I opened that page , appeared there is error in page. * please put the file in this forum.  |
| | I'm working on a Project, which includes downloading some files from INTERNET, and the code language is C++, I'm using Codegear C++ Builder 2009, If anyone knows how to download a file using c++ code. please help me, I'll be greatly thankful if you provide a code snippet and then …  |
| | I am writing a database API in C++ and I cant seem to think of a good way to handle the errors. For example if certain error conditions are met I would like to set some sort of error flag and allow every class to check that flag. I have … |
| | I am inclined to suspect that Borland C++ compiler 5.02 is seemingly full of bugs. Even though my C++ codes could be bug free, it reported External errors on compiling and failed to create an EXE file to run. Thanks to Mr. Salem, I have successfully compiled the above codes … |
| | I am trying to create a program where it will read in the student name, nationality, and grades, and calculate their tuition fee based on those information. I began to write a bit of code by I have ran into some problems. When I try to run my code, the … |
| | i usually use Visual Studio 6 or sometimes Dev Cpp.. but, they can't show me the runtime and the memory spent.. i need that information, to make sure that my program is qualified.. can someone help me about cpp compiler that can do that? thx. |
 | hello every one.. i m a newbie and was going through structures.the code is as followes: [code]#include<string> using namespace std; #define n_emp 3 struct workerdb { string name; short age; int salary; }employee[n_emp]; void printdb (workerdb); int main() { int n; for (n=0;n<n_emp;n++) { cout<<"name: "<<endl; getline(cin,employee[n].name); cout<<endl; cout<<"age: "<<endl; … |
 | Hello, I would like to find out if there is a c++ library that supports fuzzy string search. If I have a list of words such as: hello, there, cool. But I search for 'Helo' I would get Hello. I assume this is a solved problem for spell checkers. Anyone … |
| | When you're done reading this feel free to tell me if I've completely misunderstood .NET As I understand it on Windows code can be compiled to IL which then allows it to be used from any .NET language like c\c++\c#, and basic. So could I, and if I can how … |
 | Hello all, I am taking a course in C++ and in Ada. Our professor has given us the choice to be tested in language profficiency in either C++ or Ada. The test format will be of simpler programming problems and more geared towards shortanswer concepts. I was wondering if anyone … |
| | i'm a little confused with the keypress thing.. this is how i write my code.. if(KEY_DOWN(VK_UP)){ // my statement ... } now what i want to achieve is, i want my statement to execute only once when i press up key. instead what happens is it keep executing till i …  |
| | p1a.c: In function `main': p1a.c:20: parse error before `char' p1a.c:46: parse error before `char' p1a.c:47: `result' undeclared (first use in this function) p1a.c:47: (Each undeclared identifier is reported only once p1a.c:47: for each function it appears in.) p1a.c:47: `basechars' undeclared (first use in this function) |
| | Is it possible to call a .dll I made in C#, and use it in my unmanaged C++ code? If so, can someone show me an example of how this is done, or a link to go about doing it. I wasn't able to find much on google, and most … |
 | When debugging my code, I put a break point at this line: [code] std::set<unsigned int>::iterator it; [/code] When I step over that line, I get "Debugger reported the following error: cannot access memory at address 0x10". I am using KDevelop that ships with Fedora 11. I've used that line of …  |
| | Dear friends, I need a help with a Wait (Hour Glass) cursor. In my MFC program, I have the following code: [CODE] void CBookDoc::SomeMethod() { AfxGetApp()->DoWaitCursor(1); // display the hourglass cursor ... // Some stuff is done ... AfxGetApp()->DoWaitCursor(-1); // -1->>remove the hourglass cursor }[/CODE] I wonder why the cursor … |
| | Two lines in the codes below have been remarked out else compiling would fail: //arrcon[1]=*scon; //count << "arrcon[1] " << arrcon[1]; The intention was to assign character values to an array with 5 elements, each with a maximum 35 characters, declared as a string array, arrcon[5],[35]; I was trying to … |
| | I have filled up a List with many elements of "Hello". Now I wonder how it is possible to use MemoryStream to "chunk" this and append it to an existing file.("C:\\OutFile.txt") I have googled around on examples for 2 days without really understand how to do this. I have understand … |
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