Using WHERE in Proc statements
If all you want to do is print out data for the males, don't create a subset in the data step and then print the subset. Print the subset directly.

Proc Print Data=library.Survey12;
WHERE Gender='M';
     Title 'Like Example 1.2 in C&P Chapter 3';
run;

Notice that there is no ID statement in the Proc Print. The observation numbers in the original data set are printed in the OBS column.

Like Example 1.2 in C&P Chapter 3

OBS    SUBJ    GENDER    HEIGHT    WEIGHT    YEAR

 1       1       M          68       155      91
 3       9       M          66       120      93
 5       8       M         250        70      91

IF the ID Subj; statement had been used, the output would have been identical to that seen in the previous example.