Programming Fundamentals:
=========================
High Level Programming Language

a language when the user can control the digital device (Computer) is called "programming language"
Ex: C, C++, Python etc.
==> Two types:
	1) Low Level ==> System Friendly
		binary instructions ==> 1's and 0's
		Disadvantages:
		==============
			1) Difficult to handle.
				32-OS	64-OS
				=====
				X-App	
			2) Too difficult to learn
				"Ravi" ==> R + a + v + i
	Middle Level ==> Assembly Language
		Embedded platform
		Not Portable
		
	2) High Level ==> User Friendly
		int, float, class, if, else, while etc.
		Portable


Translators:
===========
	Convert the instructions from one form to another form
		High level ==> Low level
		Middle level ==> Low level
		Source program ==> object program
	==> three types:
		1) Compiler
		2) Interpreter
		3) Assembler


Compiler:
========
{
	inst-1
	inst-2
	inst-3
	function1(data)
	{
		st-1
		st-2;
		value;
	}
	function2();
}

block-1 ==> definition section
block-2 ==> function-1
block-3 ==> function-2

==> Compiler can divide the total program into multiple blocks.
==> perform the translate operation block by block.
==> In the block the translation should be statement by statement.
==> While the translation, if any error/issue is present in any statement,
	the compiler should pause the operation and continue with remaining program.
==> after all the translation, the compiler make display all the errors on the screen for the resolving and to get the output by executing. 

Interpreter:
===========
{
	line-1
	line-2
	line-3
	fun1()
	fun2()
}

==> Interpreter should not divide the total program into blocks.
the total program can understand as single block.
==> The translation is based on the statement by statement as like the compiler.
==> If any error in any statement while translation, the interpreter should stop the operation immediately until the clearance.

C, C++ ==> Compiler based
Python, JavaScript, HTML ==> Interpreter
Java, C# ==> Compiler & Interpreter

===============================================
What is the Scripting Language?
===============================
Programmer ==> X-App
		guidelines

X-App ==> cannot release 

Testing
	X-App
		f1	f2	f3	f4

Gmail:
	Login
		Mail: Correct
		Pwd: Correct
			login Successful

		Incorrect Mail
		Correct PWD

				Correct Mail & Incorrect PWD
						Incorrect Mail & Incorrect PWD	

==> Scripting Language can use to write Script (Small Snippet)
	Script ==> to test the application in positive manner and/or negative manner
		to check whether the application is responding as per the client requirements or not.	

							Login Fail/Incorrect Credentials

==> Ex: Python 

Python ==> Programming	

==> All the Scripting languages ==>Interpreter dependent.


Source code ==> Compiler ==> Class Code ==> JVM (Interpreter) ==> Object Code

Source Code ==> Interpreter ==> Object Code

.java ==> Compiler ==> JVM
	javac

#include
main()

class
	main()


a == 10
b = 20
c = a+b
print(c)


Java Code (.java) ==> javac file.java (compilation) Class Code ==> JVM (Interpreter) ==> Object Code

Python Code (.py) ==> PVM (Interpreter) ==> Object Code


============================================

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