"""
Example from lecture 27/8. Using the 
input() function to read an input variable from the user.
"""


from numpy import exp
p0 = 100.0 # trykk ved havoverflaten (kPa)
h0 = 8400 # skalah?yde (m)

h = input("skriv inn h?yde:")
h = float(h)


p = p0 * exp(-h / h0)
print(p)