IF and THEN (do statement to test conditions)

The results of the test determine the action to be taken by the PRL program.

Syntax

where

• IF-THEN statement is all on one line.
• expression consists of variables, whole numbers, or character strings connected by operators (see Expressions-and-operators).

• THEN is required and can be followed by a PRL statement or a BEGIN clause terminated by an END statement with a semicolon (;) suffix.
• statement can be any of the following PRL statements: BEGIN, GOTO, END, SET, or EXEC. An example follows:

• BEGIN indicates that a series of PRL statements follow the IF-THEN condition. More than one statement can be nested within the IF condition when a true condition results from the test. The end of the statements is signaled by an END statement followed by a semicolon (END;):

The semicolon (;) suffix distinguishes this END statement from an END that terminates PRL execution.

END without a semicolon (;) suffix terminates PRL execution as follows:

The entire report generation sequence can be coded in an IF statement. For example, to produce a report that outlines, among other things, the 20 busiest CPU users in your system, keep a variable called COUNT and increment it just before REPORT. Follow this with a conditional statement that terminates the job when 20 are reported.

Example