Traditionally, the Hello World program is the first example offered as the
introduction to a programming language and does nothing more than output the
string "Hello World" to the output medium--generally the console. While adequate
to demonstrate a particular language can actually do something, for anyone other
than the novice programmer, a more thorough example is called for.
These code examples attempt to demonstrate basic capabilities of the languages
we will examine by expanding Hello World to include:
-
Command Line Parameters
Taking input criteria from the command line. -
Prompted Input
Prompting the user for input criteria. -
Input Validation
Examination of input criteria against programmed limits. -
Conditional Branching
Altering the execute path based on conditions. -
Iteration
Repeated execution until a condition is met.
bbhw [count]
where: count = Number of iterations. User prompted of not supplied.
Counts down from count to 0, pausing between each iteration, and prints each
count until complete.
