"WAP(write a programme) on how to whistle..???

This happened in college me n my friends were having fun in lunch hour..
as we were not participating in any of the events
we thought of learning how to whistle, so that we can
sit in the last row during the fest n whistle...
so the lessons started... only few knew how to whistle
so others were learning, wit lots of shooo.. foooo... and feeee's and with
different funny sounds we were quite disturbing to others...

so one of my friend said "we have internals coming soon so better learn
subjects than wasting time like this..."
we just ignored her saying " we are learning, the way to whistle...."
and she asked "k then, wap on how to whistle...??"
we all thought for a while n discussed with ourselves n the result was....
*algorithm on how to whistle....*
step 1: start
step 2: input - blow the air from the lung to the mouth with high pressure
step 3: computation - roll ur tongue a little, n place ur two fingers on it n close
ur mouth leaving a gap,blow the air.
step 4: output - Feee ee eeeeeeeeeee........
step 5: stop
we all just laughed at the output n felt very proud for our own programme,
n started to write the way of whistling in maths eln n other subs...
this was an enjoying moment....
N finally i have successfully learned to whistle today,
fheee eeeee......