Programming :: Access Main Program Function From Library?
Mar 10, 2010it possible to access main program function from dynamicallyinked library in c language?For example:main.c:
Code:
#include<stdio.h>
void func()
[code]...
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Programming :: Structure Of The Main Function In C?
Sep 22, 2010I have started learning C and am following Ivor Horton's "Beginning C - From Novice to Professional". I've noticed that in the book the structure of the main function is:
int main (void) however on the internet I found a lot of cases: void main (void)Which one is preferred and why?
Programming :: How Can A Friend Function Access A Public Function From A Base Class
Nov 16, 2010Code:
#include <iostream>
using namespace std;
[code]...
Programming :: Adding Strlcpy() Function To Library?
May 2, 2011I am running on windows, i don't have strlcpy() function as it's not a standard function, so i want to add it to my library, i know how to do that thankfully ^_^This is the function:
Code:
/*$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $*/
/*
[code]....
Programming :: Difference Between Init And Main Function In A Process
Jul 12, 2010I have a project in which many processes run. p1,p2,p3.
->There are some .so files are included in some process when needed example ppp.so in process p1 (when ppp is needed and will go like a plugin) but it has a init () function how a process includes a init() function ?
->process p1 has main function i.e main()
->so evry process has main() right ?
what is the difference between init () and main () functoins. where is init () used and how many init() a process van have ?
Programming :: Real Life Example Of Running Main Function Infintely?
Jun 18, 2011This is not a Linux specific question.Can someone over here give me an example where I have to run the main function infinitely?
View 4 Replies View RelatedProgramming :: Calling Fftw3 Library Function While Using Gfortran Compiler?
Jul 6, 2011This is my first post. I am unable to call some of the fftw3 library functions in a very simple fortran code. The code is as follows (the filename is trial.f):
Code:
program trial
implicit none
[code]...
Programming :: Undefined Reference To 'main' Error In Crt1.o Function _start
Apr 13, 2011I've having problems with my Makefile.
I'm trying to create a program from 2 files - main.cpp that contains the main function, and modules.c that contains the definitions of the functions that are called in main(). modules.c only contain function definitions, no main function.
My Makefile is as follows:
Code:
I have included "modules.h", which contains all the function declarations, in my main.cpp.
When I try to make using this Makefile, I get the error
Code:
If I switch the order of modules.o and main.o in my $(TARGET) line, then I get errors that say "undefined reference to" the functions I have defined in modules.c, in main.cpp.
Programming :: Incorporating Subroutine In Main Program?
May 23, 2011Say, i have a main program called as vauto.f ( written in F77 ) and complied with gfortran and run successfully using the help from Mr. Colucix ( Many thanks, Mr. Colucix ). Got an output file (RFILE) after running this program. I want to post process this out put file giving this as input to some other program, that is written as sub routine in a separate file, four.f. I tried to incorporate this subroutine into the main program v.auto.f and ran into several compiling errors and before saving those errors my system went dead so could not post here the errors ( sorry about that ).Think myself as a very new programer. what would you advice me to do??
==a. create an object file of that subroutine file and link that to main file and compile both of them and get output fileb. After obtaining the result file from the first program (RFILE), run this subroutine ( but how to do that?? is my question bugging me for more than 4 days, tried different things and met with failure ).=====
For our kind attention, have attached the main program (vauto.f), RFILE, four.
Programming :: Error Compiling C++ Program Using C Library
May 8, 2010I've created 3 files: swap.h and swap.c then make static library from it
Code:
Then I write 2 program to test this library: test_swap.c and test_swap.cpp
I compile
Code:
What's wrong with this in C++? And how can I make a library that can work both for any C and C++ program?
Here the source code
Code:
Code:
Code:
Programming :: Connect Math.h Library To C Program?
Jun 27, 2010I've started programming in c recently . following are the details about scene:
* vim is editor and program is compiled in gcc whenever a program involving math function appears it gives error i.though math.h is included in header file compiler complains about it it gives error of unrecognized function that math function like sqrt, etc question is how to connect math.h to a program.
Programming :: Get Path Of One Library To Link It Dynamically In Program?
Apr 28, 2010I'd like to get path of one library to link it dynamically in my program. Probobly the best way would be to add macro to my configure.ac file.
View 2 Replies View RelatedProgramming :: Finding A Cross Platform Library That Allow To Run Another Program?
Aug 19, 2010Is there any equivalent of WaitFOrMultipleObjects on Linux?
I was finding a cross Platform library that allow you to run another program from your C++ application. I found POCO but it does not support functionality like WaitFOrMultipleObjects for both (linux and windows). I tried boost Process but its not official till now.
Programming :: How Does A C Program Starts - What All Functions Calls Before Calling Main()
Mar 1, 2011How does a C program start in linux? Is main() the first function called in the a c application by kernel. I understand it is the first called function written by the application programmer, but the question is to understand the what all kernel does and what all functions it calls before calling main()
View 9 Replies View RelatedProgramming :: Sendto Function Call In UDP Client Program ?
Jan 5, 2010The following is the UDP client code I am using.
Code:
Even the server is down, sendto function is not returning -1.
Instead, it is returning the length of the message as if it is success.
Programming :: C++ Program Calling A Fortran Subroutine With A Function In The Argument?
Mar 9, 2011I have a new problem; i want to call a subroutine's fortran which have a function in the argument and the compilation ran properly, but when i execute the program this shows me an "Segmentation fault". This is my c++ program:
Code: //Main.cpp
#include <stdio.h>
#include <iostream>
[code]....
Programming :: How To Access Setdest Function In Ns2
Apr 25, 2011i want to know how to access setdest function in ns2
View 1 Replies View RelatedProgramming :: Python - Call Function From The Command Line After Compile The Program?
Dec 28, 2010If i have a python file with a function call_me(a,b),how can I call this function from the command line ,after i compile the program?
View 5 Replies View RelatedDebian Programming :: Can't Access Math Function
Apr 30, 2015When 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.
Programming :: Calling "system()" Function From Cgi C Program?
Apr 3, 2011when i call the "system()" function from my C program everything works well, but when i try to call it from a cgi C program it doesn't work. the server log tells me this is a permission error.i have chmod'ed 755 the cgi program but it still does not work.
View 5 Replies View RelatedServer :: Make A C Function Present In The Library To Execute In Php?
Apr 10, 2011how to make a c function present in the library to execute in php and should be able to pass a any new argument back to the c library from php
View 2 Replies View RelatedSoftware :: Debug Undefined Reference To Library Function (yad 0.5.1)?
Oct 15, 2010I'd like to learn debugging techniques as much as to solve this particular problem. While trying to build yad 0.5.1:
Code:
yad-notification.o: In function `yad_notification_run':
/tmp/yad-0.5.1/src/notification.c:330: undefined reference to `gtk_status_icon_set_tooltip_text'
According to the source package's README file, "Yad depends on gtk+ only. Minimal gtk+ version is 2.12.0". I checked /var/log/packages and found gtk+2-2.14.7-i486-4 is installed.
Inspecting /tmp/yad-0.5.1/src/notification.c showed that gtk_status_icon_set_tooltip_text is a function. So it should be declared in the gtk+2-2.14.7 header files (or not?).
Checking:
Code:
c@CW8:/usr/include/gtk-2.0$ find . -name '*.h' -exec grep gtk_status_icon_set_tooltip_text {} ;
[no output]
Is this enough analysis to justify reporting an issue? Is there any more I can do before logging an issue?
OS: Slackware 13.0 32-bit.
yad download: http://code.google.com/p/yad/downloa...ar.xz&can=2&q=
The downloaded package checksums OK. Netsearching for gtk_status_icon_set_tooltip_text finds no pages.
Programming :: Passing Data From Interrupt Handler Function To Tasklet Function?
May 18, 2010I 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.
View 2 Replies View RelatedProgramming :: Log Access File Program?
Nov 11, 2010i want to make a program to write the result of access to a file ,i mean for example a user wants to (open,delete,edit)a file but if he has no access to this file ,something write to a log file.so after that i can check which user got access denied by accessing to which file.or if any tools available that can do this?or if there is any built in log access file that record the permission denied to files?
View 4 Replies View RelatedProgramming :: SDL Static Library - Shared Library ?
Apr 7, 2009I'm reading about shared, static, and dynamic libraries. What is SDL? Is it static, shared, or dynamic?
I always thought a library would be a lot of .h and .cpp files compiled separately into .o files and then if you compiled your own program you could use the -l parameter to link the library and it was all compiled together. Now I'm not so sure.
I don't even see any SDL .cpp files in my system anywhere. All I have are lots of SDL .h files in /usr/include/SDL and I don't really understand the code in them.
I'm making a wild guess here: SDL is a shared library. SDL itself is NOT compiled into my program, therefore SDL must be on any system my program tries to run on. When I compile and link SDL all it needs is the header files to know what SDL function and objects it can use. And then on every system it uses an already compiled SDL shared library thingy somewhere.
So... where is that part of SDL? All I can find are header files.
I'm thinking the advantage of shared libraries is that someone could say update SDL on their own system and take advantage of the new features without having to download new executables with the new version of SDL compiled into them for every program that uses SDL.
So if I'm making an editor and a game engine and they both use a lot of the same .cpp and .h files that I wrote and I'm tired of updating one and then the other and I need to turn them into a library, then a shared library might be kind of a silly solution. I could just make a static library. Right? Because it's not SDL. Nobody else is ever going to use this library.
Programming :: Access A Function's Definition In "vim"?
Jun 23, 2010I'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"?
View 1 Replies View RelatedProgramming :: Convert A Dynamic Library (filename.so) To A Static Library (filename.a)?
Nov 18, 2009How can we convert a dynamic library (filename.so) to a static library (filename.a) using gnu gcc . Can we get a static library form a dynamic library . I saw a few post in which the conversion form a static library to a dynamic library is mentioned but, unfortunately, not the other way.
View 4 Replies View RelatedProgramming :: Declaring A Function In A Function - C Programming
May 24, 2010I 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
[Code]...
Programming :: Bash Array Add Function Example Using Indirect Array Reference As Function Argument?
Jun 20, 2010I 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.
#!/bin/bash
addelementtoarray()
{
local arrayname=$1
[code]....
General :: Program Compiled With G++ -L Option Uses Library From /usr/lib?
Jun 28, 2011I was unable to compile a program that used libicu42 on Ubuntu 11.04, because Ubuntu 11.04 has only libicu44 and does not have libicu42 installed. So during compile time I used g++ prog.c -L mylib/ to compile the program. mylib had libicu42 (This library is a shared library and has the .so extension). The program compiled successfully, but when I tried to run it, it failed and complained that it did not find libicu42. So I had to manually install libicu42 in /usr/lib. Then the program worked.'ldd prog' revealed that it looked for libicu42 in /usr/libWhat was the point of specifying the library path using -L, if the compiled program looked for the library in /usr/lib? It's almost like it was just to satisfy the compiler.
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