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This article assumes that readers are aware of what pointers are and how they are used in 'C'. As a quick overview, A pointer is a special variable which holds the address of a variable of same type. For example :
Lets say there is a variable 'int a=10' so,a pointer to variable 'a' can be...
By poornaMoksha
Last Message By lionaneesh
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I am doing C programming from a couple of years ago and finally I convinced myself and grabbed all my guts to write an article on Pointers. Now, one could easily question Why? Basically, Pointers are the most useful part of C and usually the most difficult to understand.
Note: I don't want to...
By lionaneesh
Last Message By Healthcare
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In this article we'll be learning how we can improve our C code by using Macros instead of functions. How simple functions can be converted into macros to save on some CPU instructions. Some basic knowledge of C and a little bit Assembly is considered as pre-requisites.
The Code
We'll be...
By lionaneesh
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Today while solving a problem, I had to convert integers to string in C to use its indexing capabilities. One simple solution was to use sprintf, which can be done in 2-3 lines, but i was temped to solve this problem without any string manipulation functions.
The Code
// Change a positive...
By lionaneesh
Last Message By Mark Brown
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I worked for a long time for this article. This program is tested on Sun-Solaris system using gcc compiler.
In market, there are a lot of tools for detecting the memory leaks. Here I made a program which has to include in your source file and it will tell the desired informations to find where...
By asadullah.ansari
Last Message By MasterAvalons
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In a language like 'C', the programmer has almost complete control over memory operations but this brings in a problem that many of you might have faced : Memory errors. Although GDB can be used in many areas of these kind of problems but there are sometimes when programmer doesn't want to put too...
By poornaMoksha
Last Message By MasterAvalons
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The other day I was working on a code where in I was doing some file related operations. I used the function feof() to test whether the end of file has been reached or not. I got into some trouble over the way I used this function in my code, after debugging a bit I found the problem. The problem...
By poornaMoksha
Last Message By oldisgold
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C implementation of double linked list
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
#define N 100
struct dlinklist
{
By shabbir
Last Message By prabakongu
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Queue implementation using linked list
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
/***** Structure template *****/
struct list{
char data;
struct list *next;
};
By shabbir
Last Message By tehdoughnut
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In this tutorial, we'll be looking at the code structure of the 'echo' utility and will try to understand how it works, for those who are unfamilliar with the 'echo' utility, its one of the most basic and most useful utilities in a shell it prints out its arguments on the standard output, if you...
By lionaneesh
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In this article we will extend our code to print more comprehensive information about a file/directory in a directory. Please Refer
Developing Linux Utility like 'ls' in C
Developing Linux Utility - Part II Arranging Output in Alphabetical Order
Example
$ ls -l
total 148 ...
By poornaMoksha
Last Message By joschmuck
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In this article I'm going to show you how to change value of variable during run time. There are many tools around how to do this easily, but I will focus on the way doing it programatically, specifically using C language.
Tools I will use: Cheat Engine 6.0
Here is a simple code for login, I...
By Scripting
Last Message By raju_mars
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Many of us know that both C and C++ do padding when allocating memory for structure.
But only few know that why the complier does it. In short, for the efficient access of the memory for OS, padding is required.
In long words, the instruction can be fetched/written one machine word at a time....
By dharmaraj.guru
Last Message By dearvivekkumar
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Program tells you the day of the date inputed. Remember when you copy the code paste in a file named *.c and not cpp file as that will cause an error. I have commented in the code where it will cause the error.
#include<stdio.h>
#include<conio.h>
#include<time.h>
#define AND &&
#define OR...
By shabbir
Last Message By Scripting
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What is Dameon Process?
A Daemon process is a process which is not associated with any terminal and hence is supposed to run in background. Since, a daemon process involves background processing, it is recommended it should not include any user interaction. Therefore, it should be clear about...
By Trinity
Last Message By karthikp
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This time I want to speak on the 'printf' function. Everybody has heard of software vulnerabilities and that functions like 'printf' are outlaw. But it's one thing to know that you'd better not use these functions, and quite the other to understand why. In this article, I will describe two classic...
By Karpov2007
Last Message By fiverivers
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We will understand a very important function 'fstat()'. We will create a working code to describe the capabilities of fstat() but before that lets theoretically Understand what it does.
fstat() as the name suggests is used to get the status of the file. By status we mean all the useful...
By poornaMoksha
Last Message By lionaneesh
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This article is the Part-II (Part-I here) of the series where in we are focusing on good coding practices. In the Part-I we discussed the importance of the assert macro/function for detecting and debugging bugs in program. In this part we will focus on good coding practices while dealing with...
By poornaMoksha
Last Message By Scripting
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What is OpenGL?
OpenGL is a set of standard API's for developing 2D and 3D graphics applications. The standard provides it in the form of a library which can be linked along wih your program (could be C/C++). OpenGL includes vast scope of API's which can be used to render figures, textures,...
By Trinity
Last Message By Trinity
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If you are a developer then you would definitely be aware of the concept of temporary files. Temporary files, as the name suggest is temporary in its persistence. Either a process creates a temporary file to hold data for certain time or to pass information to another process. An ideal process...
By poornaMoksha
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