C Programming Tutorials

C Programming Tutorials And Articles
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The C Progrmming Language Standard In 1983, the American National Standards Institute (ANSI) commissioned a committee, X3J11, to standardize the C language. After a long, arduous process, including several widespread public reviews, the committee's work was finally ratified as ANS X3.159-1989...
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Code for Integer Into Words #include<stdio.h> void main() { long int n,t; char a={" ","One","Two","Three","Four","Five","Six","Seven","Eight","Nine","Ten"}; char b={" "," ","Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"}; char c={"...
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Introduction In computer science a search algorithm is a technique of finding a particular item among a collection of items. Searching for data is the second most common activity (after sorting data) necessary for creating many types of programs. Sequential Search In this technique we...
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Signals are the interrupts. They are a way of providing asynchronous events. For example a user typing ctrl-c on terminal to stop a program. Most of the programs need to handle signals. Every signal has a name like SIGxxx. For example : SIGALRM is the alarm signal that is generated when the timer...
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After writing Why main() should not have void as return type? article the other day, suddenly one more question came up into my mind about the signature of main() function. In the earlier article I discussed about why 'void main()' should not be used when ANSI C expects the function main() to...
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As the name suggests, volatile specifier indicates the compiler that the value of the variable is volatile i.e. it can change unexpectedly. But, the question comes why do we need to even specify that a variable value is volatile. The Requirement for volatile specifiers Our compilers...
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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...
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This program takes the elements from the user in random order & then arranges it in form of Binary Search Tree.It then asks user for traversal #include<stdio.h> // including headerfiles #include<conio.h> #include<stdlib.h> struct tree ...
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We all have been using Functions since we stepped into programming. Numerous times we have called a function with some arguments to it. We all know that the basic declaration of a function is : <return-type><function-name>(<comma seperated list of arguments>); For example : int func(int...
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In this article, we will discuss different implementations of sleep functions that had flaws to understand how sleep function evolved. Before discussing the sleep function implementations, lets first understand briefly the following two functions : alarm() function From Linux Man page : ...
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If you are an experienced C/C++ programmer then you must have definitely observed some weird behaviors of code in certain situations. These weird behaviors can be due to various reasons but most of them are because of stack corruption. For all those who have no idea about what stack corruption is,...
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If you work 3-4 hours daily on coding in C/C++ then there ought to be some programs, logics, tricks, tips etc which you come across daily. Some are new to only you while others are interesting enough to be shared. Here in this article, I am going to share one interesting program and how I went...
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The other day I was searching a bit on Linux viruses on Internet. Though there are quite a few now but still cannot be compared with the volumes that we have on windows. Another thing that I found was the permission robustness that Linux file system has as compared to windows OS. So, whiling...
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Being a Linux system programmer there are numerous situations when one needs to deal with files kept on disk. Like opening a file, reading a file(one character at a time, one line at a time, the whole file at a time), seeking in a file and then finally closing it. One can use various library...
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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...
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GCC provides quite a lot of builtin functions. These functions are part of standard C offered by the compiler and may come in various variants as per the gcc. These are also termed as hardware specific functions which are internally implemented in assembly or we can say machine instructions, with...
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Pretty sure, one must have used the datatype ‘float’ numerous number of times since the day one has started programming. However, there are many times, when we mishandle floats and doubles, or get unexpected results while using float variables or find ourselves being perplexed while using floating...
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Error handling has always been dominantly vital in programming. It has become a bit more sophisticated with the object oriented languages, however even in the system programming language like C, error handling is being offered in its own simple ways. Introduction To swim deep into the...
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There are many built in data types in C. But sometimes, the built in data types are not enough to perform the required tasks. In that case, some custom data type can be built to meet the necessary requirements. In this tutorial, the following custom data types are going to be discussed: ...
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Data files are very essential part of in computer programming. The data we use while programming using the variables of different data types, are unavailable after the program execution. So,there is no way to retrieve the data if we further need. Here comes the necessity of data files. FILE...
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