[size="6"]Write a function integerPower ( base, exponent ) that returns the value of
base exponent
For example, integerPower( 3, 4 ) = 3 * 3 * 3 * 3. Assume that exponent is a
positive, nonzero integer and that base is an integer. The function
integerPower should use for or while to control the calculation.
Do not use any math library functions.

