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Program Structure

Basic structure of JS, C++, Python, PHP program

Concept Meaning

Every program has a structure: write instructions, run them, and show output. Some languages need extra structure, while others are direct.

A school assembly has a fixed order: prayer, news, thought, announcement. A program also follows an order.

Program runs in order.

Do not ignore braces, semicolons, indentation, or opening tags.

Same Logic • Different Syntax

JavaScript

let msg="Hi";
console.log(msg);

C++

#include <iostream>
using namespace std;
int main(){
 string msg="Hi";
 cout<<msg;
 return 0;
}

Python

msg="Hi"
print(msg)

PHP

<?php
$msg="Hi";
echo $msg;
?>

Structure makes code readable.