C Programming Tutorials

C Programming Tutorials And Articles
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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...
Introduction This article talks about different ways of handling Abnormal Condtions or Errors that occur or Invalid Data receiving by an Application. These Errors are something, the programmer expect to occur in their Applications. Depending on the specific circumstances, below are some...
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 : ...
Mostly people are using this algorithm to compute matrix multiplication: #define n 1000 int main() { int a,b,c; c=0; for( i=0;i<n;++i) {
Refer to the recent articles on Understanding File Handling Functions in C & Understanding Advance File Handling Functions in C C communicates with files using a new datatype called a file pointer. This type is defined within stdio.h, and written as FILE *. A file pointer called output_file is...
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...
File Splitter is a very useful utility application for downloading . User want to download and store the downloaded files into Floppy disk , Its possible only if the downloaded file size is Less than or equal to 1.38 MB , If file size is more than the floppy disk size then File Splitter is...
A friend of mine who is learning to program in C, was having diffculty in writing a program to find the sum of all the prime numbers between a specified limit (in her case 3-60). I helped her out with the program, and I thought I'll post it here which might help others. /* ** Program to...
The code to find upper and lower diagonal of 3x3 matrices #include<conio.h> #include<stdio.h> void main() { int a,i,j,k; clrscr(); printf("\n Enter a Matrix 3x3:\n\n");
Two of my friends faced a problem with writing a program which finds the LCM(Lowest Common Multiple)/GCD(Greatest Common Divisor) of two positive integers, so I helped them out by writing two functions for each. I thought many others might be having the same problem. So here are the functions:...
In this tutorial we’ll be making our first running C Program, It will simply print out a Message on the Screen! So let the coding begin. :party: hello.c #include<stdio.h> int main() { printf("Hello World! This is my first C Program "); return(0); }
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...
What are format strings Format strings are strings that are used to render and arbitrary number of varied datatype parameters into a string when given as a input to string formatting functions like printf, sprint etc. Understanding 'printf' 'printf' is a standard format string function in...
==================== .FRIENDSHIP CALCULATOR. ==================== #include<stdio.h> #include<string.h> #include<conio.h> main() { clrscr();
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...
Introduction On 4th August, shabbir posted this question : (at the $1 Daily contest thread) List a set of prime numbers where the sum total of the complete set is 100. So, I thought why not generate try generating *all* such sets of primes, instead of *any* such set ? And, I sat down to...
Dev-Cpp is an application which is used to code and run programs in C/C++. It has its variations but none of them come with a pre-installed graphics library. So if you are switching from some primitive editor like TurboC to Dev-Cpp (which follows ANSI specifications correctly) and try to write the...
A lot many times you would have used a Linux command with some arguments to it. Like : cp -r /home/user/Desktop/abc /home/abcrm -rf abcIn the above examples, 'cp' or 'rm' are the name of binaries (written in 'C') while the rest of the stuff is the command line arguments to the respective...
There are certain situations where you may want to limit your process's use of system resources like CPU or may want to put certain limitations on things like number of open file descriptors, maximum memory your process can allocate for its data etc. You may use commands like ulimit, sysconf etc to...
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...