Programming :: How Can A Friend Function Access A Public Function From A Base Class

Nov 16, 2010

#include <iostream>
using namespace std;


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Programming :: Function Pointers To Class Members Cpp

May 23, 2010

i'm a bit stuck playing with the following class setup for glut. The actual issue is with the function pointers.Basically the following code is the opengl redbook cube example slightly modified.

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Programming :: Python - Get A Return Value From A Class'd Function?

Mar 11, 2011

I'm trying to teach myself python (from Learn Python the hardway e-book) but am struggling to grasp the concepts of Classes etc. Part of exercise 43 is to rewrite the game / create a new game with classes for each room etc. So I'll show you my code so far and explain at the bottom my problem

from sys import exit


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Programming :: C++ Class Member Pointer Changes After Function Returns?

Mar 30, 2011

I'm venturing into the world of OpenGL, but in the process of writing my graphics library I ran into a problem... My code is:

#include <stdio.h>
#include <stdlib.h>


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Programming :: C++ Using Private Variable In Public Function?

Feb 6, 2011

I have a class in which a have declared a private variable "time". In one of the public functions, I am returning the value of "time" (either directly by using "return time;" or by something similar to "x=time; return x;" but I keep getting a compiling error saying that "time" is not declared in this scope.

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Programming :: Access Inherited Member From Base Class?

Sep 14, 2010

I have a problem. This class is a base class for a basic enum handler:

#define ENUMOBJECT_BEGIN_ELEMENTS enum Element {
#define ENUMOBJECT_END_ELEMENTS ElementCount, DefaultElement, NoElement };


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Programming :: Sending RSA Public/private Keys Into Calling Function?

Sep 9, 2010

My calling application will accept only strings and interger. we are replacing RSA bsafe library to openssl. using RSA bsafe, we have generated the private and public key in BER format. Then convert the keys, BER format into ASCII format to send the calling function. (these everything done by using RSA supplied bsafe library) same way i have to right using openssl..i m now able convert the RSA public and private key into DER format

rsa = RSA_generate_key(1024, 3, NULL, NULL);
size_t size;


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Programming :: Passing Data From Interrupt Handler Function To Tasklet Function?

May 18, 2010

I am doing some Linux kernel programming for my research project. I need to record the timestamp (by using cpuid and rdtsc) when an interrupt handler (top half) is first invoked. Due to the time critical nature of the problem itself, I have to do the timestamping inside the interrupt handler itself (the first operation when the handler is called). However, I understand that tasks that are not so time critical should be deferred to a tasklet function (bottom half) for processing because other interrupts are disabled in a (top-half) interrupt handler. I am currently out of idea on how I can pass the timestamp information that I have obtained in the interrupt handler to the corresponding tasklet function.

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Programming :: How To Access Setdest Function In Ns2

Apr 25, 2011

i want to know how to access setdest function in ns2

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Debian Programming :: Can't Access Math Function

Apr 30, 2015

When I try to compile this code:

#include <math.h>
int main (void) {
double x, y;
x = 2;
y = sqrt(x);
return 0;

With the command:

$ gcc test.c

I got this message:

/tmp/cc5QZmCN.o: In function 'main':
test.c:(.text+0x16): undefined reference to 'sqrt'
collect2: error: ld returned 1 exit status

I tried this on a fresh jessie install. I have the same problem on wheezy.

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Programming :: Bash Array Add Function Example Using Indirect Array Reference As Function Argument?

Jun 20, 2010

I looked on the net for such function or example and didin't find anything, thus after having made one i guess it would be legitimate to drop it to see what others thinks of it.

local arrayname=$1


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Programming :: Access Main Program Function From Library?

Mar 10, 2010

it possible to access main program function from dynamicallyinked library in c language?For example:main.c:

void func()


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Programming :: Declaring A Function In A Function - C Programming

May 24, 2010

I want to declare a function in a function, but had no success till now, see the error code below and visit the project at sourceforge


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OpenSUSE Hardware :: Multi-function Epson Stylus Sx218 - Can Not Run The Scanner Function ?

Mar 24, 2011

I bought a multifunction stylus sx218 Espon model and I can not run the scanner function. I did some research and found a few solutions and very functional. I hope someone solves the problem. My version of openSUSE 11.2.

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OpenSUSE :: Get Function Set_magic_quotes_runtime() To Function On The Newer Versions?

Mar 30, 2011

I'm currently using OpenSuse 11.1 web server. This is bad since 11.1 is no longer supported. the reason why I am using it is because Function set_magic_quotes_runtime() was no longer being used. (so I was told)

That being said, is there a way to get Function set_magic_quotes_runtime() to function on the newer versions of OpenSuSE?

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General :: Write Script To Use Function And Still Keep Function Active?

Feb 21, 2010

the function terminates if no key is pressed for 10 consecutive seconds. I tried using the -t option as suggested in some forums, but my version of showkey doesn't have the option of changing the timeout. The options I get are:

-h --helpdisplay this help text
-a --asciidisplay the decimal/octal/hex values of the keys
-s --scancodesdisplay only the raw scan-codes
-k --keycodesdisplay only the interpreted keycodes (default).

Is it possible to write a script to use this function and still keep the function active until an interrupt is recieved?

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Programming :: Access A Function's Definition In "vim"?

Jun 23, 2010

I'm using ubuntu 9.04;Is there a complete library for C++ programming in ubuntu like "MSDN"?!hen using "Vim", I want to access a function's complete definition such as it's header file, library description and parameters, etc.Is it necessary to install something from repository to obtain such a documentation? And what would be the command to access a function's description in "vim"?

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General :: Access Driver Function Using System Call ?

Apr 13, 2010

As per my knowledge, one can use systemcall to call the driver functions for example using open, close... Now is there any way to call driver functions directly from application without using system call?

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Programming :: Calling An Asm Function From C?

Jun 4, 2010

I have a question about calling an asm function from C....It doesn't work unless I create an asm variable to hold the value of the function in....Why?Here's the code that doesn't work...

asmfile.s - version one Code: .section .data
mydata: .ascii "this is the message!
.equ mylen, . - mydata


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Programming :: Using Backtrace() Function In C?

Jul 23, 2010

I want to use backtrace() function to debug a crash issue. I tried this sample code to see how backtrace works. backtrace() function always returns 0 with the below code. Is there any kernel configuration that needs to be set for proper working of backtrace?

#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
/* Obtain a backtrace and print it to stdout. */
print_trace (void)


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Programming :: How To Write / Use Function

May 30, 2010

Can you offer me the code about fmod() in C. I want to know how this function work, i am very interested in it because i have no idea to implement it, i want to know... how to write the function... not 'how to use the function' can anyone post the source codes of this function here?

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Programming :: Accessing C Function From C++

Jul 5, 2010

i have an open source application that was developed in C++ (it uses objects and namespaces all over the place). I also have another application that was developed in C. Now i am trying to insert the code made in C into C++ application, but when i do that , i get this error on compilation of the source code:

error: 'mpi_init_vars' was not declared in this scope the function mpi_init_vars() is not part of object oriented programming and it doesn't belong to any scope, it was compiled into an object file and i am linking it with all objects of C++ application.

How can invoke the C function from C++ object oriented code?

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Programming :: Bash Function Using If / Then And Else

May 2, 2011

I am trying to build a function inside a script.

#System commands and other configurable.
INT_NET= .....

I can find lots of tutorials in how to use if, then, else. However, how do I define a variable inside the function?
for c in $ISO
Also, am I using the 'test' command correctly( -/+ week as valid test)?

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Programming :: Calling C Function In Php?

Feb 7, 2011

I am doing a web site program and what I need is to call a C program in the PHP cloud.Do u think it would be possible? The web site would get the user input from PHP UI and pass to the C program , the C program would process the function with the user input and output the a PHP page.

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Programming :: C++/c Function Is Uable To Know Its Name?

Jan 4, 2011

I ask if a c++/c function is able to know its name from inside itself:


int funct1(int a,b)
printf("%s ",funct_name());
or with a trick.

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Programming :: Run 'time' On A Function?

May 30, 2010

diskfillerfunction () {


Test 15: fill up partition /usr/bin/time: cannot run diskfillerfunction: No such file or directory

I am obviously omitting (...) a lot of the code, but the relevant part is all there. How do I 'time' a function?

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Programming :: Run Function In Background?

Mar 26, 2010

I wrote a spinner in Perl and when I did a spinner in shell I could just run the subroutine in the background.


In Perl, how do you run a function in a background and get the PID for that? I know PID in Perl is $$

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Programming :: Regarding Sleep() Function In C?

Mar 25, 2011

I know what is the functionality of the sleep() method.

for(i = 0; i < length; i++){
", message[i]);

Result :every print of the message will be takes 1000sec of gap but i want to know why wee need to use the Sleep function. where exactly it is useful

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Programming :: Return Value From A Function?

Nov 15, 2010

On this link [URL]4 a return type is defined

return ((unsigned int)(unsigned long)base & TBASE_DEFERRABLE_FLAG);
What is the above function returning.I am not clear with definition of what is being returned in the above code.

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Programming :: Use Function C In Java?

Apr 8, 2010

i want to compile function c in java and compile library is success.. when i call the library in java and error is :

Exception in thread "main" java.lang.UnsatisfiedLinkError: no in java.library.path
at java.lang.ClassLoader.loadLibrary(
at java.lang.Runtime.loadLibrary0(
at java.lang.System.loadLibrary(


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