# Homework 26, problem 3: Calculator object.
#
# Build a Calculator class with:
#   self.value       -- starts at 0
#   add(n)           -- adds n
#   sub(n)           -- subtracts n
#   mul(n)           -- multiplies by n
#   show()           -- prints "Value: <value>"
#
# Chain a few calls and confirm the value updates.
#
# Run with: python exercises/26/homework/03-calculator.py

# Your code goes here: