Calculate months onwards from set date

[werner123]

Hi
I am trying to calculate the month in value onwards according to =Today() in a cell

example , say A1 has 2017/02/01 and B1 has the today() in 2017/04/23

so the answer in C3 should be 2 and next month the answer should be 3

C3 =

DATE(YEAR(A1);MONTH(A1)+(B2);DAY(A1))

, not working
A1 will always be smaller or equal to B1

I am trying to avoid the EDATE function as this will be used on different pc's , and not sure if it is installed
I dont need the years of days to calculate , only months

Thank you

[mana]

=DATEDIF(A1,B1,"M")

[werner123]

Thank you , works great