11.   In the example below, radianangle becomes equal to the angle whose cosine is y.

12.   In the example below, the operands are boolean.

13.   In the example below, radianangle becomes equal to the angle whose sine is y.

14.   In the example below, radianangle becomes equal to the angle whose tangent is y.

15.   The input file in the example below is a text file produced by a word-processor.

16.   The example below reads data into an array.

17.   The example below calculates the circumference and area of a circle of a given radius.

18.   The example below is an error handling routine designed to cope only with the far less thanESCAPEgreater than key being pressed.

19.   The first example below sets only the date and the second sets the date and the time.