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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 its continuous processing not caring to wait for any input or to display any output. However, C programming does not define any such restrictions in its development as such. A daemon process developer should be well aware of its definition and ideal functionality before one starts the programming.

A well known example of a daemon process could be a mail server, which runs... [Read More]

In C-Style typecasting we discussed about type casting and why is it required and how it is used in C programming. C++ has more types of typecasting and an entirely different way to use them.

A point to be noted that C++ typecasting would be mostly described and used in context of classes, as an effect of C++ being object oriented.

Types of C++ TypeCasting

There are following four types of type casting in C++:

Static-cast

Static cast is generally said to be used for... [Read More]

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 system calls.

Note: As always, we will be discussing everything in the Linux environment.

Working with system calls

There are certain points that one should keep in mind while dealing with system calls.

• One should have in and out knowledge of the

... [Read More]

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 makes sure that the temporary files are deleted as soon as the process is done with them.

An example

Lets suppose a developer (who is unaware of the standard ways to create and use temporary file) is asked to develop a code that uses a temporary file to hold data for sometime and then is deleted. What would he/she come up with ?

Lets see a generic code :
... [Read More]

I have been writing many articles on C/Linux explaining concepts, APIs and their usage etc. This time I thought to write on a fundamental concept that every newbie should be well aware of in order to become a good coder, ie 'Good coding practices'. I have 3-4 broader level points to make here. I'll try to cover one point in this article while the others in the subsequent parts. I am sure this article will come in handy for the beginners.

Defensive Coding

For newbies I must say that writing a code that runs correctly in normal conditions is not very easy, the logic needs to be sound. But writing a code that behaves gracefully in all the adverse or failure... [Read More]