Exercise · Operators · lesson 9 of 9
Exercise: average of three
Write a function func average(a, b, c int) float64 that returns the arithmetic mean of three integers, fractional part included.
average(1, 2, 3)→2average(1, 2, 2)→1.6666666666666667average(-1, -2, -4)→-2.3333333333333335
Constraints: the numbers are from -1000 to 1000 and may be negative; the result is compared with a tolerance of 1e-9.
Do not add extra imports unless the task says so explicitly.
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