FIT 100
© Copyright University of
Washington 1999-2000
The Idea of Procedures
vProcedures
encapsulate computation for general application
oA procedure’s
operation should be hidden from view
oIt must be possible
to give data to a procedure and get results back from the procedure
oAll of the possible
eventualities must be considered
vThe procedure
concept has two parts:
oA procedure
“declaration” -- defines how computation goes
oMany procedure
“calls” -- requests to have the procedure performed
The fundamental idea of procedures: Whenever
the procedure is called, “substitute”
its definition