Nassi-Shneiderman Diagram

The Nassi-Shneiderman diagram uses specific symbols to represent different control structures and program elements:

Symbol	Interpretation	Description
	Expression Block	Represents a single statement or expression
	Do While Block	Represents code once, then repeats while condition is true
	For Block	Represents code for a specified number of iterations
	If Else Block	Represents one of two code paths based on a condition
	If-ElseIf Block	Represents code based on multiple sequential conditions
	Switch Block	Represents code based on matching case values
	While Block	Repeats code while condition is true
	Try-Catch Block	Handles code execution and error cases

Each symbol aligns with its interpretation:

• Expression blocks represent non-decisional, non-iterative, or any other expressions.
• Do While, While, and For blocks repeat code with conditions at the top or bottom.
• If Else and If ElseIf blocks show side-by-side branches based on conditions.
• Switch blocks split horizontally for each case.
• Try Catch Finally blocks split horizontally for each block.