vYou are reading email and your
friend living outside the US says the
temperature is 38o
vThat’s Celsius, of course.
What is it in Fahrenheit? Is it hot or cold,
you wonder. Why doesn’t your computer
have a Celsius-to-Fahrenheit
converter?
vThis situation arises all of
the time … there are many things a computer
could do for you, but the software is not available
oYou can step through the
process yourself, i.e. convert to Centigrade
oBut what you’d like
is to solve the problem once-and-for-all and have the solution packaged-up to be always available
vWhat you want is a
procedure
v