Function powIT(ByVal a, ByVal b)
'function to calculate a to the power of b using iteration
'function has two inputs (a,b) and one output (y)
'b must be a positive integer
Dim y As Double
'The answer (y) might be big so we should use 
'Double instead of Integer 
Dim count1 As Integer
y = 1.0
count1 = 0
Do While count1 < b
	y = y * a
	count1 = count1 + 1
Loop
Return y
'You MUST include a Return statement in every function
End Function