A subroutine is a reusable section of code. It is like a mini-program that can be called from another point in your program. Within it you can define variables, execute statements, compute results, and write output. To define a subroutine, use the form statement to indicate the start of a subroutine, and use endform to [...]
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A driver program is one program that controls another (driven) program. SAP supplies driver programs with the R/3 system. You supply the driven program. When you start your program, a driver program always starts first, and then it calls the events in your program. To reiterate, a driver program starts first and then controls when [...]
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An event is a tag that identifies a section of code. The section of code associated with an event begins with an event name and ends when the next event name is encountered. In Listing 17.1, the event names are initialization, start-of-selection, and end-of-selection. Event names are reserved words. You cannot create new events-you can [...]
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Q:Why aren’t bit operations used much in ABAP/4? What does it use instead?
A:The use of a bit operation creates an operating system dependency. This reduces portability, so they are not used unless necessary. Instead, a single character variable is used to hold a single on/off value. Most commonly, “X” represents an “on” value and space [...]
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Comparison between EXIT, CONTINUE, and CHECK
StatementEffect
exitLeaves the current loop.
continueUnconditional jump to the end of the loop.
check exp
Jumps to the end of the loop if exp is false.
Popularity: 15% [?]
Popularity: 15% [?]