ARGCOUNT

Example 7-21 Checking the Number of Arguments

In the following example, the program, a user-defined function, verifies that three arguments are passed. When the number of arguments passed is not equal to 3, the program terminates with -1 as a return value.

DEFINE threearg PROGRAM INTEGER
LD User-defined function expecting three arguments
PROGRAM
ARGUMENT division TEXT
ARGUMENT product TEXT
ARGUMENT month MONTH
IF ARGCOUNT NE 3
   THEN RETURN -1
    ELSE
     DO
     ...