raw date file

[beatraca]

1---+----10---+----20---+---
FRANCE,INDIA,10MAR2004
ITALY,USA,10/20/2004
SAFRICA,FRANCE,17JUN2004
AMERICA,FRANCE,12/31/2004
FRANCE,USA,20JAN2004
ITALY,USA,08/19/2004

The following SAS program is submitted using this file as input:

1 2 3 4 5 6 7 8

data work.flights; infile 'file-specification' dsd; input from_co $ @; if from_co='FRANCE' or from_co='SAFRICA' then do; input to_country $ flightdate : date9.; output; end; run;

How many observations does the Work.Flights data set contain? I don,t understant because is 3

[Reeza]

The trick to understanding code is to comment each line.

Ones you don't understand will stand out.

Is there a specific piece of the code you're not understanding?

[ballardw]

When there are explicit OUTPUT statements data is only written to the data set when the Output is executed. The Output in the example is only executed when the condition :

if from_co='FRANCE' or from_co='SAFRICA'

is true.

So when the from country is FRANCE or SAFRICA is the only time you get results.