How to Sub routine

[#1]

SUB inc(a,b)

a=a+1

exit SUB when a>10

b=b+1

End SUB

Call inc(1,0)

How to verify that the Subroutine gets invoke and way to print the values of a and  b. 

[gussfish]

Use the TRACE statement - this will write a message to the log. In its

simplest form, you can put this on the line after the SUB inc(a,b)

statement:

TRACE Entered the subroutine;

To show the value of a variable, use something like this:

TRACE a=$(a);