What are the difference between table controls and step loops in dialog programming?

SAP Reports,SAP DB,ALE, SAP Tables questions and answers

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What are the difference between table controls and step loops in dialog programming?

1. Function modules use a special screen to define the parameters where as subroutines use the same ABAP/4 editor to define its parameters.
2. Tables work area can be commonly shared by calling program and subroutine where as function modules do not share commonly.
3. Calling a function module syntax (Call function.) is different from calling a subroutine syntax (perform….).
4. With raise statement user can exit from a function module where as exit is used in subroutines.

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