HOW TO RUN PYTHON PROGRAM IN COMMAND PROMPT?
============================================
1) start the command prompt
2) need to use "cd" command
Syntax:
	cd folder_path
the above command can navigate you to the file location
3) run the corresponding file using the command "python".
SYntax:
	python file-name.py

# WAP TO PRINT ALL 4-DIGIT AMSTRONG NUMBERS.

AMSTRONG NUMBER:
================
THE SUM OF EQUIVALENT LENGTH'S POWERS OF INDIVIDUAL DIGITS IS EQUALS TO ORIGINAL NUMBER ==> AMSTRONG NUMBER

EX: ABC 
A^3 + B^3 + C^3 == ABC

ABCD

A^4 + B^4 + C^4 + D^4 == ABCD

4-DIGIT AMSTRONG NUMBERS ARE IN BETWEEN 1000 TO 9999
1000 ==>1^4 + 0^4 + 0^4 + 0^4 ==> 1 == 1000 WRONG
1001
1002

NESTED LOOPS
LOOP WITH CONDITIONS

for num in range(1000,10000):
    # need to define the logic of armstrong number for each number
    n = num # initialization    1234

    result = 0
    while n != 0:
        ind_dig = n % 10    # 4 3   2   1
        powers = ind_dig ** 4   # 256   81  16  1
        result += powers    # 256 337   353 354
        n = n // 10 # 123   12  1   0
    
    if result == num:
        print(num,end = "\t")


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

Infinite loops:
===============
the loop can execute infinitely

1) when the condition is incorrect
2) when the update statement is missing
3) when the update statement is incorrect.

# incorrect condition
=====================
i = 1

while i >= 1:
    print(i)
    i = i + 1

=======================
# missing of update statement
==============================

i = 1

while i <= 10:
    print(i)

======================================
# incorrect update statement
=============================

i = 1

while i <= 10:
    print(i)
    i -= 1

======================================
Applications of Infinite Loops:
================================
1) Gaming Applications
car race:
	start the car with speed: 10kmph
	increase to 20 kmph
	30	40 50.......

cards
2) Network Communication Applications

ex: Smartphone ==> Jio
	started call ===> destination user
		7.00 am ====> 8.30
		=================>
		=================>
		==================>
		<==================
		<==================
		===================>

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

Transfer Statements
===================
1) when we want to stop executing the loop uncertainly
	1 to 10
		during the 5th iteration:
			stop the execution
2) when we want to pause/skip the loop with only one iteration and continue with remaining iterations
 	1 to 10
		1 to 4 ==> take
		5th iteration ==> stop/pause
		6 to 10 ==> continue

There are two types of transfer statements:
	1) break
	2) continue

1) break statement:
===================
==> when we want to terminate the loop execution immediately
Syntax:
	break

for i in range(1,11):
    if i == 6:
        break
    print(i,end = "\t")


2) continue statement
=====================
==> when we want to skip the specific iteration and continue with remaining, continue is used.

Syntax:
	continue

for i in range(1,11):
    if i == 6:
        continue
    print(i,end = "\t")


Note:
====
All the transfer statements can always define in loops only along with conditions. 

With out conditions:
====================
while i <= 10:
    print(i,end = "\t")
    i += 1
    break
=======================

i = 1

while i <= 10:
    print(i,end = "\t")
    i += 1
    continue

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

Note:
====
No switch statement in python