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A flowchart is a formalized graphic representation of a logic sequence, work or manufacturing process, organization chart, or similar formalized structure. The purpose of a flow chart is to provide people with a common language or reference point when dealing with a project or process.
Flowcharts use simple geometric symbols and arrows to define relationships. In programming, for instance, the beginning or end of a program is represented by an oval.  A process is represented by a rectangle, a decision is represented by a diamond and an I/O process is represented by a parallelogram. The Internet is represented by a cloud.

Flowchart Symbols Meaning

 

 Steps to take

Draw your start diagram,

see flowchart is a process of listing the step to take in doing something, let say you want to cook rice and you are asked to draw the flowchart on how to cook rice.

 the first thing is to draw your start

then your input diagram which will be to input water

then process diagram which is to boil the water

then the input diagram which is to input the rice

next the process diagram which is to parboil the rice

next the decision diagram which will be if the rice parboil YES/NO if yes then goto to the next diagram, if No go up to parboil process

next end. 

 

I assume you are well aware of English Language, which is a well-known Human Interface Language. English has a predefined grammar, which needs to be followed to write English statements in a correct way. Likewise, most of the Human Interface Languages (Hindi, English, Spanish, French, etc.) are made of several elements like verbs, nouns, adjectives, adverbs, propositions, and conjunctions, etc.
Similar to Human Interface Languages, Computer Programming Languages are also made of several elements. I will take you through the basics of those elements and put some effort to make you comfortable to use them in various programming languages. These basic elements are:

• Programming Environment
• Basic Syntax
• Data Types
• Variables
• Keywords
• Basic Operators
• Decision Making
• Loops
• Numbers
• Characters
• Arrays
• Strings
• Functions
• File I/O

I will explain all these elements in subsequent chapters with examples using different programming languages. First we will try to understand meaning of all these terms in general and then we will see how these terms can be used in different programming language.
I believe if you understood above-mentioned elements related to any programming language, then you are almost ready to write big enough programs in that programming language.
I designed this tutorial to give you an idea about the following most popular programming languages:

• C Programming
• Java Programming
• Python Programming

Major part of the tutorial has been explained by taking C as programming language and then I tried to show how similar concepts work in Java and Python. So after completion of this tutorial, you will find yourself familiar with these popular programming languages