Method and function calls

Display Listing 1.

We must call the following methods and functions in the order shown below:

• Coach's say method
• World's a+b function
• World's toString function
• Coach' getWidth function

The sequential calls to these methods and functions follow the comment "Show various..." in Listing 1.

Eventually, we must embed all four calls into a single statement.

They were separated into individual statements solely for illustration purposes.