8. Passing Arguments to Functions
• Declaring a function with an argument
• Specifying a default value
• Defining a two-argument function
• Calling a two-argument function
• Multiple optional arguments
• Changing argument values
19. Returning Values from Functions
• Capturing a return value
• Returning a value from a function
• Using a return value in an if( ) statement
• Returning an array from a function
• Using an array returned from a function
• Multiple return statements in a function
• Passing a return value to another function
• Using return values with if( )
• Functions that return true or false
• Assignment and function call inside a test expression