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Understanding Object-Oriented Programming in C++

By Md Shoriful Islam
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Understanding Object-Oriented Programming in C++ Introduction: Object-oriented programming (OOP) is a powerful paradigm that revolutionized the way we write software. With its emphasis on encapsulation, inheritance, and polymorphism, OOP enables developers to create modular, reusable, and maintainable code. In this blog post, we will explore the fundamentals of OOP in C++, one of the most popular programming languages for building robust and efficient applications. Objects and Classes: At the heart of OOP in C++ are objects and classes. An object is a real-world entity with its own state and behavior, while a class serves as a blueprint for creating objects. In C++, classes are defined using the class keyword and can contain data members (variables) and member functions (methods). By instantiating a class, we create an object that possesses the properties and behaviors defined within the class. Encapsulation: Encapsulation is the principle of bundling data and methods within a class
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Java programming Language

By Md Shoriful Islam
 * **Introduction**     * Introduce the topic of Java programming and why it is a popular language.     * Discuss the benefits of learning Java, such as its versatility, portability, and security. * **What is Java?**     * Provide a brief overview of Java, including its history, features, and syntax. * **Why learn Java?**     * Discuss the benefits of learning Java, such as its versatility, portability, and security. * **Where to learn Java**     * Provide a list of resources for learning Java, including online tutorials, books, and courses. * **Getting started with Java**     * Provide a step-by-step guide to getting started with Java, including installing the Java Development Kit (JDK) and writing your first Java program. * **Java projects**     * Suggest some Java projects that you can work on to learn the language and build your skills. * **Conclusion**     * Summarize the benefits of learning Java and encourage readers to give it a try. Here are some additional tips for writing yo
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Good things of Competitive programming

By Md Shoriful Islam
 Good things of Competitive programming Competitive programming is a fun and rewarding activity that challenges your logical thinking, problem-solving skills and coding abilities. It is also a great way to learn new algorithms, data structures and programming languages. In this blog post, I will share some of the good things of competitive programming that I have experienced and enjoyed. One of the good things of competitive programming is that it helps you improve your coding skills. By participating in contests, you get to practice writing efficient, elegant and bug-free code under time pressure and with limited resources. You also get to learn from other programmers who may have different approaches or solutions to the same problem. This can help you broaden your perspective and discover new tricks and techniques. Another good thing of competitive programming is that it boosts your confidence and motivation. When you solve a hard problem or rank high in a contest, you feel a sense o
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JavaScript Dot notation and Bracket notation

By Md Shoriful Islam
 JavaScript Dot notation and Bracket notation In this blog post, I will explain the difference between dot notation and bracket notation in JavaScript, and when to use each one. Dot notation and bracket notation are two ways of accessing properties of an object in JavaScript. An object is a collection of key-value pairs, where each key is a string and each value can be any type of data. Dot notation is the most common and concise way of accessing properties of an object. It uses a dot (.) followed by the name of the property. For example, if we have an object called person with a name property, we can access it using dot notation like this: console.log(person.name); // prints "John" Bracket notation is another way of accessing properties of an object. It uses square brackets ([]) with the name of the property as a string inside them. For example, we can access the name property of the person object using bracket notation like this: console.log(person["name"]); // pr
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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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