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Section 1.7 Functions
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Program
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.. literalinclude:: cprogs/sec_1.7_functions.c
   :language: c

Explanation
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This program is a simple demonstration of functions. A function `power` is
declared to take two integer arguments and return an int value. In the program
we send a number, base and a  number, n to power, and the program returns the
value of base raised to power n.