Question

1. Discuss the basic elements of a computer program and how they are put together. (Hint: If you write a paper for class, the elements are words, sentences, paragraphs, and sections, and they are put together in a variety of ways. A program has a similar structure.)  
   Be sure to read the answers of other students before you respond; and be sure to respond to any comments or questions from the professor. The purpose of a Discussion is to encourage an online dialogue.
2. What is Python? How is it used?
3. Discuss the use of variables, expressions, statement and indentation in Python.
   

Answer 1

Basic Elements of a Program

   Variables:           These are the data container, which various types of data, like counter information, user information, file information, etc.
                   Example - int, string.

   Loops:               It is a block which includes repetition of certain instruction under few circumstances.
                   Example - For loop, While loop.

   Conditionals:           It is a block that allows the program to be executed only under certain conditions.
                   Example - If-Else block.
  
   Input/Output:           Data sharing among various resources, like user or external file.
                   Example - User input function or File input/output function.

   Subroutines and functions:   These are the modules or sets of modules that are frequently used over the complete program.
                   Example - Library function.

What is Python?

   Python is a general-purpose programming language.
   It is type inferred i.e it automatically infers the data types.
   It gets interpreted.

How it is used?

   Install Python from Official website - https://www.python.org/downloads/
   Open Python from the program.
   Execute commands on the console.

Use of variable

   A variable is used to store the data.
   A variable can be declared in python by simply naming it and initializing it.
   Example:   Num = 21

Use of Expression

   An expression is a combination of keyboard letters which can consist of data variables, operators, symbols etch to give the result.
   Example:   Sum = 10 + Num

Use of Statement

   A statement is an independent line in a program that contributes to the result of a program.
   It is a building block of a program, a set of statements that build a program.
   Example:   print(Sum)

Use of indentation

   Python requires a proper indentation, in order to mention the extent of a block.
   For example:
           if i < 10:
               print('Inside If')

           print('Outside If')