JS • C++ • Python • PHP

Programming Logic in 4 Languages

JS, C++, Python & PHP Made Simple — modern infographic notes website for beginner programming classes.

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30 Page Programming Notes

Search and open any lesson. Every page includes concept meaning, analogy, code, output, mistake, and memory tip.

Page 1

Programming Introduction

What is programming? Why many languages use same logic?

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Four Languages Overview

JavaScript, C++, Python, PHP basic purpose and usage

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Same Logic, Different Syntax

One concept written in 4 different languages

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Program Structure

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

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First Program

Hello World in all 4 languages

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Output Statement

console.log, cout, print, echo comparison

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Variables Introduction

What is variable? Real-life box analogy

Open Lesson → Page 8

Variable Declaration

JS let, C++ datatype, Python direct assign, PHP $ variable

Open Lesson → Page 9

Data Types Basic

Number, text, decimal, boolean in 4 languages

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Variable Naming Rules

Rules, mistakes, good variable names

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Assignment Operator

How value is stored using =

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Runtime Value Meaning

Getting value while program is running

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User Input Basics

Input in JS, C++, Python, PHP

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Runtime Addition Program

Add two numbers using user input in 4 languages

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Compile Time vs Runtime

Simple difference with classroom example

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C++ Compile Time Concept

Why C++ needs compilation before running

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Interpreted Languages

JS, Python, PHP runtime execution explanation

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Operators Introduction

Arithmetic operators: + - * / %

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Comparison Operators

==, !=, >, <, >=, <=

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Logical Operators

AND, OR, NOT in 4 languages

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If Condition Introduction

Decision making: if mark pass concept

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If Statement in 4 Languages

Basic if syntax comparison

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If Else Statement

Pass/fail example in JS, C++, Python, PHP

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Else If / Multiple Conditions

Grade calculation example

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Nested If

Condition inside condition with real-life example

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For Loop Introduction

Repeating task concept: counting 1 to 10

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For Loop in 4 Languages

Syntax comparison with number printing

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Loop with Condition

Printing even numbers / multiplication table

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Arrays Introduction

Storing multiple values in one variable

Open Lesson → Page 30

Arrays in 4 Languages

JS array, C++ array, Python list, PHP array comparison

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