Representation of Algorithms

Flowchart

• A flowchart is a pictorial representation of an algorithm.
• A flowchart is a diagram made up of boxes, diamonds and other shapes, connected by arrows. 
• Each shape represents a step of the solution process and the arrow represents the order or link among the steps.
• Symbols used in a flowchart and their purpose:

Example: Flowchart to find largest of 2 numbers

Pseudocode

• Algorithms can also be represented as pseudocodes.
• It is considered as a non-formal language that helps programmers to write algorithms.
• It is intended for human reading and cannot be executed directly by the computer.
• Frequently used keywords while writing pseudocode:

1. 1. INPUT
   2. COMPUTE
   3. PRINT
   4. INCREMENT
   5. DECREMENT
   6. IF/ELSE
   7. WHILE
   8. TRUE/FALSE

Benefits of Pseudocode:

• Improves readability of the algorithm.
• It can be used as a rough documentation for increased program understandability of programs by  different programmers.
  
  Example: Pseudocode to find largest of 2 numbers