topic Local Variables Versus Global Variables in Application Development and Automation Discussions

Local Variables Versus Global Variables

Former Member — Wed, 17 Nov 2010 15:58:42 GMT

DATA A TYPE I VALUE 100.

PERFORM PRINT_DATA.

FORM PRINT_DATA.

DATA A(10) TYPE C 'HELLO'.

WRITE / A. "Wanted to Print 100 (Global)

WRITE / A. "Wanted to Print 'HELLO'(Local)

ENDFORM.

Note : Both the times, the Local Variable 'A' is Printed .

?Is there any way to Differentiate the Local and Global Variables When the Names Are Same.*

*It Might be Possible in Object Oriented But I am Looking for the Same in FORMs.

Re: Local Variables Versus Global Variables

ThomasZloch — Wed, 17 Nov 2010 16:13:14 GMT

Local declarations are masking global declarations. Using identical names is extremely bad programming style.

Solution: do not use global variables, and if you must, prefix them with "g_", for example.

Thomas

Re: Local Variables Versus Global Variables

former_member229034 — Wed, 17 Nov 2010 16:33:23 GMT

Hello Gagan,

You want to print the Global as well as the local values of the variable named "A". Here are a couple of approaches:

1.The 'Subroutines' are part of the modularization techniques. There are certain keywords like "using" & "Changing" so that you can work by passing Values.

2. There is a keyword named "LOCAL". Declare data object with the keyword "LOCAL" and then try the 'write" statement. I suppose this should work for you.

Let me know if any one of the above works or if you need more help.

Best Regards,

Chaitanya

Re: Local Variables Versus Global Variables

kesavadas_thekkillath — Wed, 17 Nov 2010 16:48:16 GMT

Check the f1 help of statements STATICS and LOCAL.