GCD and LCM Using Recursion in C – Euclidean Algorithm

This C program finds GCD and LCM using recursion with the Euclidean algorithm. The GCD (Greatest Common Divisor) is the largest number that divides both inputs with no remainder. The LCM (Least Common Multiple) is the smallest number divisible by both. Once the GCD is known, the LCM follows from a simple identity: GCD(a, b) …

Fibonacci Series in C – Iterative, Recursive, and Array Methods

The Fibonacci series in C is a sequence where each number is the sum of the two preceding ones, starting from 0 and 1: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, … This page covers three approaches — iterative series printing, a recursive function, and a side-by-side comparison of their time and …

Factorial Program in C – Iterative and Recursive with Output

The factorial program in C is one of the most common exercises for learning recursion and loops. The factorial of a non-negative integer n, written n!, is the product of all positive integers from 1 to n. By definition, 0! = 1. This page covers two approaches — iterative and recursive — with compile-verified code, …

Array search program in C

Very often we encounter a situation where we have to search for a given target value in a list of values. Simple value types like integers are stored in arrays. This program demonstrates how to do a search within an array by using a method called linear search. Linear search, also called as ‘Sequential search’ …

C Program to check the given number is Armstrong or not?

C Program to check the given number is Armstrong number or not?. Armstrong number is a number that is the sum of its own digits each raised to the power of the number of digits. Example: 153 = 1^3 + 5^3 + 3^3. Read more about C Programming Language . /************************************************************ You can use all …

C Program to Demonstrate getting the parameters from the command line.

Command line arguments let users pass data to a C program at the moment they run it — without embedding values in the source code or prompting for input. When you run ./copy src.txt dst.txt, the strings src.txt and dst.txt arrive in your program through two special parameters: argc and argv. Understanding them is essential …