C Programming Tutorials

C Programming Tutorials And Articles
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InFix to PostFix Introduction Infix Expression : Notation in which the operator separates its operands. Eg (a + b) * c. Infix notation requires the use of brackets to specify the order of evaluation. Postfix Expression :
Refer to the recent articles on Understanding File Handling Functions in C & Understanding Advance File Handling Functions in C Opening A File Before we can write information to a file on a disk or read it, we must open the file. Opening a file establishes a link between the program and the...
A simple code of Http-Web-Server in C done by a beginner level programmer. Please suggest if you liked it and lets make it better !! Hows that!!! The Code #include<stdio.h> #include<string.h> #include<arpa/inet.h> #include<netdb.h> #include<sys/types.h> #include<sys/socket.h>
Integers is a fundamental data type in a C program, They are used to represent a finite subset of mathematical integers, C Provides us with a suite of functions, and quite a lot of modifiers for manipulating these integers , but if these functions and modifiers are not used properly and carefully...
In this article, I'll present some interesting 'C' problems for which I will not provide the answer. If you are not bale to solve any problem, then just leave a comment here so that everybody is benefited when the problem is discussed. Problems 1) Will the program execute without any problem?...
After writing my previous article Virus Code in Linux - C Code That Changes it's Process Name Run Time, I wondered if a process can change its name then why cannot it change its PID. And what if a process can change both its name and PID after lets say every 1 second? Well it will be a difficult...
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...
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...
Introduction Itís my first post here. I will discuss on Date & Time Management Functions of C. Though if someone is only interested about getting the time and date, then it can be done by some trivial function but the goal of this detail discussion is understanding the bios as well as...
There are a certain functions in C, which if used in a particular combination may cause problems. These problems are due to the conflicting behaviors of the functions. In this article, we will understand the problem caused by using one such combination of functions scanf() and fgets()/gets(). ...
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...
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...
There are times when you write a small or a big code and when you execute it you get a very small and precise output 'Segmentation fault'. In a small piece of code its still easy to debug the reason for this but as the code size grows it becomes very difficult to debug. Here in this article, I am...
I recently faced a problem regarding these 2 Escape Sequences. So, I thought I should share the difference between these two to clarify to all who may hay have confusion like me. Thanks to Shabbir too...... The Difference There are a few characters which can indicate a new line. The usual...
/*question number 1*/ int z,x=5,y=-10,a=4,b=2; z = x++ - --y * b / a;What number will z in the sample code above contain? Choice 1 5 Choice 2 6 Choice 3 10 Corrected by buddy by running the program Choice 4
Huffman encoding is a compression technique used to compress data for transmission.This program takes string as input from user and shows its encoded form as output with some intermediate outputs as well. The purpose of it is to reduce the number of bits used for each character for its transmission...
Hello My first game of TicTacToe and thought I will put the same here after the Game of Mojo and Max 8 Note :- This will compile in Turbo C 3 Only and the zip contains the executable Version also for you to see. #include <iostream.h> #include <conio.h> #include <stdlib.h> ...
The article discusses about all the number formats viz Binary, Decimal, Octal, Hex and BCD (Binary coded decimal) and conversion from Decimal to Binary, Octal and Hex and also the reverse conversion. Binary A numbering system based on 2 in which 0 and 1 are the only available digits. ...
Typecasting is simply a mechanism by which we can change the data type of a variable, no matter how it was originally defined. When a variable is typecasted into a different type, the compiler basically treats the variable as of the new data type. Example Lets go for a very simple example : ...
Environment variables can be thought of as a name value pair that affect the behavior of the processes running on an operating system. For example, to know the value of environmental variable PATH in my system, I do : -laptop ~ $ echo $PATH ...