Hour 11Advanced Perform
Statements
In Hour 10, “Processing Loops,” you learned the basic format for the Perform
statement. In this hour, among other things you learn some more advanced methods of using Perform
, such as
• Using inline Perform
statements
• Using Perform
with Varying
• Testing before and after the Perform
• Nesting Perform
statements
• Compiling and linking a program for use with the interactive debug utility
Several other ways to use Perform
make it a very powerful looping tool. In addition to the previously discussed methods of using Perform
, you may code what is called an inline Perform
. In this type of Perform
, the lines of ...
Get Sams Teach Yourself COBOL in 24 Hours now with O’Reilly online learning.
O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.