Handbook of SAS DATA Step Programming

76 Handbook of SAS

®

DATA Step Programming

5.3 Using Looping to Read a List of External Files

5.3.1 Using an Iterative DO Loop to Read an External File

To read an external le, you can use the INFILE statement. Program 5.13

reads the external le, text1.txt, which is located in “C:\”.

TEXT1.TXT:

01 145

02 119

Program 5.13:

data ex5_13;

infile "C:\text1.txt";

input id $ sbp;

run;

Because there are two observations in the external le, SAS will use two

iterations in the implicit loop of the DATA step to read the data. When SAS

reaches the end-of-le marker, it stops reading.

Alternatively, you can use an explicit loop to read an external le. Inorder ...