Demo test the Stopwatch data type. Takes a command-line argument n and computes the sum of the square roots of the first n positive integers, first using Math.Sqrt(), then using Math.Pow(). It prints to standard output the sum and the amount of time to compute the sum. Note that the discrete sum can be approximated by an integral - the sum should be approximately 2/3 power (n^(3/2) - 1).

public static void MainTest(
	string[] args
)