Filter
Top Products
When total=7 then new='purple'
When total=9 then new='orange'
When total=10 then new='green'
Otherwise new=var1 /* entered duplicates */
END
Say new; exit /* Displays: "purple" */
Err:
say 'Input error--color is not "red" or "blue" or "yellow"'; exit
ARG converts alphabetic characters to uppercase before parsing. An example of ARG with the arguments
in the CALL to a subroutine is in section “Parsing Multiple Strings.”
PARSE ARG works the same as ARG except that PARSE ARG does not convert alphabetic characters to
uppercase before parsing.
PARSE EXTERNAL
Say "Enter Yes or No =====> "
parse upper external answer 2 .
If answer='Y'
then say "You said 'Yes'!"
else say "You said 'No'!"
PARSE NUMERIC
parse numeric digits fuzz form
say digits fuzz form /* Displays: '9 0 SCIENTIFIC' */
/* (if defaults are in effect) */
PARSE PULL
PUSH '80 7' /* Puts data on queue */
parse pull fourscore seven /* Assigns: fourscore='80'; seven='7' */
SAY fourscore+seven /* Displays: "87" */
PARSE SOURCE
parse source sysname .
Say sysname /* Displays: "CICS" */
PARSE VALUE example is on page 203.
PARSE VAR examples are throughout the chapter, starting on page 204.
PARSE VERSION
parse version . level .
say level /* Displays: "3.48" */
PULL works the same as PARSE PULL except that PULL converts alphabetic characters to uppercase
before parsing.
Advanced Topics in Parsing
This section includes parsing multiple strings and flow charts depicting a conceptual view of parsing.
Parsing Multiple Strings
Only ARG and PARSE ARG can have more than one source string. To parse multiple strings, you can
specify multiple comma-separated templates. Here is an example:
parse arg template1, template2, template3
Parsing
Chapter 15. Parsing 211