What is a subroutine in ABAP?
A subroutine is a reusable section of code. It is a modularization unit within the program where a function is encapsulated in the form of source code. A subroutine can be defined using Form and EndForm statements.
What is subroutine programming?
Subroutines are small blocks of code in a modular program designed to perform a particular task. Since a subroutine is in itself a small program, it can contain any of the sequence , selection and iteration constructs.
What are the types of subroutines?
There are two types of subroutine:
- procedures.
- functions.
What type of abstraction is subroutines?
Subroutines, a.k.a. routines, subprograms, procedures, or functions, may just be the most important building block of good code. They are the most basic kind of code abstraction.
Why are subroutines used?
Subroutines make programs shorter as well as easier to read and understand, because they break program code into smaller sections. This makes programs easier to debug. When creating very large programs, you can give different programmers different subroutines to write, and these can then be combined.
How do you use subroutines?
In the main program, a subroutine is activated by using a CALL statement which include the subroutine name followed by the list of inputs to and outputs from the subroutine surrounded by parenthesis. The inputs and outputs are collectively called the arguments.
Is subroutine a module?
A module is like a package where you can keep your functions and subroutines, in case you are writing a very big program, or your functions or subroutines can be used in more than one program. Modules provide you a way of splitting your programs between multiple files. Packaging subprograms, data and interface blocks.
What do you call a subroutine in ABAP?
INCLUDE ZILX0004. Subroutines are procedures that you can define in any ABAP program and also call from any program. Subroutines are normally called internally, that is, they contain sections of code or algorithms that are used frequently locally.
Can a subroutine be called from an external program?
Subroutines are normally called internally, i.e. called from the same program in which it is defined. But it is also possible to call a subroutine from an external program. Subroutines cannot be nested and are usually defined at the end of the program. A subroutine can be defined using FORM and ENDFORM statements.
How to create subroutine in Z _ submain program?
Go to SE80 transaction, select the program and right click on the program to create subroutine (Create Subroutine). Step-3: Enter the subroutine name in the below screen, select the New Include Z_SUBRMAIN and click on Continue icon. Step-4: Now, new subroutine sub_routine code included in the Z_SUBMAIN program like below.
Which is the best description of a subroutine?
A subroutine is a reusable section of code. It is a modularization unit within the program where a function is encapsulated in the form of source code. You page out a part of a program to a subroutine to get a better overview of the main program, and to use the corresponding sequence of statements many times as depicted in the following diagram.