C Programming Tutorials

C Programming Tutorials And Articles
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Program prints the month without using any system related information but just making some simple calculations of days from the reference day 1/1/1900 as Monday. #include<stdio.h> #include<conio.h> #define Y 1900 /*1/1/1900 Monday*/ void days(int ,int ); void display(int , int );...
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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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I've arrived at the source code of a widely know instant messenger Miranda IM. Together with various plugins, this is a rather large project whose size is about 950 thousand code lines in C and C++. And like any other considerable project with a long development history, it has rather many errors...
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This time we checked Apache HTTP Server with PVS-Studio. As we had expected, we found errors there. The errors are few. We expected this either. Other developers come across this situation too while testing PVS-Studio on their projects. Unfortunately, the first conclusion you would like to draw...
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At times certain tasks need more time to execute and when multiple such tasks are desired then blocking on a single task is not a good practice. To Understand, Think of a program that provides some service but this service takes time to execute. Now, if you want this service again and again then...
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Continuing the previous discussion that we did on Unix Threads (Basics) , today we will discuss the concept of 'Thread Synchronization'. Going through a quick recap, we now know that threads are used to make calls to functions non-blocking (asynchronous). One important point that we did not discuss...
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The fork() unix API provides mechanism to spawn a new process from an existing process. This function is called once in a program but it returns twice. Once in parent process and once in its child process(the new spawned process becomes the child process).The return value of this function in child...
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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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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 ...
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Algorithms are the riches of any programming language. The major objective of any algorithm is being efficient and optimized. For any logical scenarios, the prime and foremost is designing an algorithm. In this article, we shall we be discussing one such scenario to determine the k-th maximum /...
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For a given problem, there maybe many solutions, but we always look for a ‘better’ solution. So, how do we determine which solution is ‘better’? In the context of algorithms and programs, we consider a solution as ‘better’ when it uses the minimum resources. Hence, an efficient program will always...
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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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Loops are the basic logic building structures in computer programming. It is a way of executing statement(s) repeatedly in specified times, which is termed as iteration. Here different types of loops in C language will be discussed. All of them have same goal, but their way of working is...
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Array is a data structure consists of a group of elements of same data type. We can think it as collection of variable of similar data type. Array prototype: Data_type array_name Example: Suppose you have a team of 10 employees. Id is given for every employee. You want to store id, age...
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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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For Loops ‘For loops’ are more concise and special kind of loops that are used to execute statements repeatedly in some programming languages including C. The For loop structure is quite different from while loops as well as do while loop structures which we had a look in previous articles. ...
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Break and Continue are two special kind of statements used in some programming languages including C , they are used in some special conditions when the programmer needs an early exit from the loop or continuation with the next iteration. Break The Break statement is used to terminate any...
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