Other Programming Considerations

This section describes other programming considerations. These consist of:

  • Boolean true and false variables
  • Format commands
  • Regular expression patterns
  • Wildcard search characters
  • Special characters

Boolean True and False Variables

Many program statements rely upon conditional tests to determine the next program statement to execute. The if program statement is an example.

Conditional tests generally evaluate to either a true or false value. Although any positive, non-zero integer can represent a true value, the integer 1 is normally used. The integer 0 represents a false value.

The following are some Boolean true and false variable examples:

LoopControl = false; #sets LoopControl to 0
LoopControl = true; #sets LoopControl to 1