st: splitting a value from its dps! Calculating age from its value with decimal points

[Raffaele Palladino <palladino.raffaele@gmail.com>]

Hello, I had to calculate my age starting from age and month of the
present (interview) and age and month of the birth

So basically I first calculated the age in months

g age_in_months = ( year_interview- yrbirth)*12+ int_month- monthbirth

then I converted the age in years

g age_in_years = age_in_months/12

but then it gives me the right age but with dps! I cannot just set the
number with 0 dp because for age doesn’t work so! If someone has 20.6
years it is still 20 years while the program would convert it in 21!

I cannot use substring because most of the values have 2 positions
before the comma (<99 years) but then few others are aged more than
100 yo (so it is three).

So basically I need to split the number and get only the part before
the comma.. how to do that? I am sure it is quite easy but somehow
internet was not very useful this time!


any advice, thank you very much!

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