SAS 2 lesson 3.2.11 level1, How do I calculate @ n numbers?

[Thirumagal manivannan]

Hi Vikas,
SAS 2 lesson 3.2.11 level1, How do I calculate @n numbers?.

I have attached Sales1.dat too.

Code
data salesstaff;
    infile "/folders/myfolders/ecourse2/sales1.dat";
input @1 employee_ID 6.
     @21 Last_name $18.
     @43 Job_title $20.
      @64 Salary Dollar8.
      @87 Hire_date mmddyy8.;
run;
Title 'Sales Staff in Australia and United
        State';
proc print data=salesstaff;
run;
title;

[Anova Groups]

In rawdata file, you start from left most column, which is 1st column and increment your count as you go right. Whenever you reach to start of data that number you put after @.