I have 2 cells, A1 were a date will be input and A2 were a date of birth will be input. I then have cell A3 were I would like it to show the someone's age next birthday at date in the cell A1. For example:

A1 = 1 May 2005
A2 = 15 June 1950 (date of birth)
A3 = 55

so on 1 May 2005, the age next birthday of the individual is 55.

all help appreciated, thanks