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Programming Introduction

What is programming? Why many languages use same logic?

Concept Meaning

Programming means giving clear step-by-step instructions to a computer. The language may change, but the logic used to solve the problem usually stays the same.

Real-Life Analogy

Like a teacher giving instructions to students: open the notebook, write the date, solve the sum. A computer also follows instructions one by one.

Expected Output

Hello World

Common Mistake

Do not memorize code without understanding the steps behind it.

Same Logic • Different Syntax

Code in 4 Languages

JavaScript

console.log("Hello World");

C++

#include <iostream>
using namespace std;
int main(){
  cout << "Hello World";
  return 0;
}

Python

print("Hello World")

PHP

<?php echo "Hello World"; ?>

Memory Tip

Programming = Problem + Logic + Language.