| Reading Variable-Length Records |
| Reading Records with a Varying Number of
Fields |
| The first three lines of the DATA step are similar to the previous example. |
data perm.health;
infile bpdata length=reclen;
input ID 4. @;
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The LENGTH= option creates a variable named
reclen, whose value is the length of the current record. Later
you can use reclen to specify how many times to execute an INPUT
statement that reads the values which represent date and blood pressure
readings.The trailing @ line-hold specifier at the end of the INPUT statement holds the current record so that a later INPUT statement can read the values for Date and BP. |
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