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What are the Armstrong Numbers between 1 to 999?

By Md Shoriful Islam
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  Armstrong/Narcissistic Number:  If a number is equal to sum of each of its digits raised to power of its digits, it is said to be an Armstrong number or a  Narcissistic number . Ex: - 371 = 3 3 + 7 3 + 1 3 = 27 + 343 + 1 = 371 371 = 3 3 + 7 3 + 1 3 = 27 + 343 + 1 = 371 1634 = 1 4 + 6 4 + 3 4 + 4 4 = 1 + 1296 + 81 + 256 = 1634 1634 = 1 4 + 6 4 + 3 4 + 4 4 = 1 + 1296 + 81 + 256 = 1634 Why is 0 excluded in the question? 0 is also an armstrong number. Here’s a C++ program to find all the Armstrong numbers upto any given number //Armstrong numbers upto given number   #include<iostream>   #include <math.h>   using namespace std;     bool isArmstrong(double n)   {   int temp,digits=0,last=0;   double sum=0;   temp=n;     while(temp>0)   {   temp /= 10;   digits++;   }     temp = n;     while(temp>0)   {   last = temp%10;   sum += pow(last,digits);   temp /= 10;   }     if(n==sum) return true;   else return false;   }     int main()   {  
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Why i should learn c++ programming language?

By Md Shoriful Islam
 Why i should learn c++ programming language? There are several reasons why learning C++ programming language can be beneficial: Versatility: C++ is a powerful, high-performance language that can be used in a wide range of applications, including desktop and mobile applications, video games, operating systems, and more. It's also used in industries like finance, healthcare, and aerospace. Performance: C++ is known for its high speed and efficiency. It allows programmers to write code that runs quickly and consumes minimal system resources, which is important for applications that require high performance. Control: C++ gives programmers more control over the hardware and memory resources of a system, which is important in certain applications like game programming, where performance is critical. Object-Oriented Programming (OOP): C++ supports OOP, which is a popular programming paradigm used to organize code and create reusable, modular software components. Learning OOP concepts can
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Why you should learn programming?

By Md Shoriful Islam
  Why you should learn programming? Learning programming has many benefits, here are a few reasons why you should consider learning programming: High demand: Programming skills are in high demand across various industries. Many businesses and organizations are looking for individuals with programming skills to develop and maintain their software systems, websites, and applications. Career growth: Learning programming can help you advance in your career. With the demand for programmers, many opportunities are available in various fields such as healthcare, finance, education, and entertainment. Problem-solving skills: Programming requires a logical and analytical approach to solve problems. Learning programming can help you develop critical thinking and problem-solving skills that can be applied in many areas of your life. Creativity: Programming is a creative process. As you learn programming, you will find that you can create your own projects and software solutions. Understanding tec
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What is Armstrong Number?

By Md Shoriful Islam
 What is Armstrong Number? 1. What is Armstrong Number? 2. Armstrong Number Logic 3. Armstrong number examples 4. Armstrong Number Algorithm 5. Python program to check Armstrong Number 6. Program To Find All The Armstrong Numbers Between 0 And 999 1) What is Armstrong Number? Beginners often wonder what is Armstrong number aka the narcissist number. It is of special interest to new programmers and those learning a new programming language because of the way the number behaves in a given number base. In numerical number theory, the Armstrong number is the number in any given number base, which forms the total of the same number, when each of its digits is raised to the power of the number of digits in the number. For example, using a simple number 153 and the decimal system, we see there are 3 digits in it. If we do a simple mathematical operation of raising each of its digits to the power of 3, and then totaling the sum obtained, we get 153. That is 1 to the power of 3 5
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403. Scientific Problem - C++ / C - Solution - Codeforces ACMSGURU problemset

By Md Shoriful Islam
403. Scientific Problem Time limit per test: 0.25 second(s) Memory limit: 65536 kilobytes input: standard output: standard Once upon a time Professor Idioticideasinventor was travelling by train. Watching cheerless landscape outside the window, he decided to invent the theme of his new scientific work. All of a sudden a brilliant idea struck him: to develop an effective algorithm finding an integer number, which is x times less than the sum of all its integer positive predecessors, where number x is given. As far as he has no computer in the train, you have to solve this difficult problem. Input The first line of the input file contains an integer number x (1 ≤ x ≤ 109). OutputOutput an integer number — the answer to the problem. Example(s) sample input sample output 1 3 sample output 2 5 Solution Code: C++ #include <iostream> using namespace std ; // solved int main () { int x ; cin >> x ; cout << 2 * x + 1 << endl ; return 0 ; } Solu
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Version Control with Git: A Beginner’s Guide

By Md Shoriful Islam
Version Control with Git: A Beginner’s Guide If you are a developer, you probably know how important it is to keep track of your code changes and collaborate with other developers on a project. But how do you do that effectively and efficiently? The answer is version control. Version control is a system that records changes to a file or set of files over time so that you can recall specific versions later. It allows you to revert files back to a previous state, compare changes over time, see who last modified something, and more. Version control also enables you to work with other developers on the same code base without stepping on each other’s toes. One of the most popular version control systems in the world is Git. Git is a free and open source distributed version control system that is designed to handle everything from small to very large projects with speed and efficiency. Git has many features that make it superior to other version control systems, such as: Cheap local branchin
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Callback function in JavaScript

By Md Shoriful Islam
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Callback function in JavaScript What is a callback function in JavaScript? A callback function is a function that is passed as an argument to another function and is executed after the first function has completed its task. Callback functions are useful for handling asynchronous events, such as network requests, file operations, or timers. For example, you can use a callback function to display the result of a calculation after the calculation is done. Callback function in JavaScript Here is a simple example of a callback function in JavaScript: // Define a function that takes a callback as an argument function sayHello (callback) { // Do some task console .log ("Hello, world!"); // Invoke the callback function callback (); } // Define another function function sayGoodbye () { // Do some task console .log ("Goodbye, world!"); } // Call the first function and pass the second function as a callback sayHello (sayGoodbye); // The output will be: // Hello, wo
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