Harshad numbers, also called Niven numbers, are numbers that are divisible by the sum of their digits. For example, 18 is a Harshad number because 1 + 8 = 9, and 18 is divisible by 9. Learning to check Harshad numbers in C++ is a fun way for beginners to practice loops, modular arithmetic, and […]

The Fibonacci sequence is one of the most famous mathematical series, appearing in nature, art, and even computer science. Each number in the sequence is the sum of the two numbers before it, starting with 0 and 1. In programming, Fibonacci problems are very popular because they help beginners practice recursion, iteration, and algorithm optimization.

Calculating the product of digits in a number is a simple yet important programming exercise for beginners. It helps understand loops, arithmetic operations, and algorithmic thinking. This task also has practical applications in problems related to digital analysis, number properties, and basic cryptography. In this article, we will explore multiple ways to find the product

Reversing a number is a common exercise in programming that helps beginners understand loops, arithmetic operations, and basic logic. It is often used in algorithms, number manipulation problems, and even in checking properties like palindromes. In C++, reversing a number can be done in multiple ways, and this article will walk you through different approaches

Understanding whether a number is even or odd is one of the simplest and most fundamental concepts in programming. It introduces beginners to conditionals, operators, and basic number properties. In C++, checking even or odd numbers is often a first exercise for beginners because it builds a foundation for more complex decision-making tasks in programs.

Finding the sum of digits of a number is a common programming task that helps beginners understand loops, arithmetic operations, and basic algorithmic thinking. This operation has practical applications in areas like checksum calculations, digital root problems, and simple number analysis. In this article, we will explore multiple ways to calculate the sum of digits

Factorials are a fundamental concept in mathematics and programming, used in permutations, combinations, probability, and algorithm design. The factorial of a number n (written as n!) is the product of all positive integers from 1 to n. In C++, calculating factorials is a common exercise that helps beginners understand loops, recursion, and function usage. This

Palindrome numbers are numbers that read the same backward as forward, such as 121 or 454. They are commonly used in programming exercises to teach concepts like loops, conditionals, and number manipulation. In C++, checking whether a number is a palindrome is a simple yet important exercise that helps beginners understand control flow and problem-solving

An Armstrong number, also called a narcissistic number, is a number that is equal to the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because $1^3 + 5^3 + 3^3 = 153$. Checking for Armstrong numbers is a common exercise in

The Fibonacci series is a famous sequence in mathematics where each number is the sum of the two preceding numbers, usually starting with 0 and 1. Fibonacci numbers appear in nature, art, computer algorithms, and financial modeling. In C++, generating the Fibonacci series is a common exercise that teaches beginners about loops, recursion, and function