Macros

Macros

• Callable modules of program code

Defining Macros - Syntax

DEFINE .

ENDDEFINE.

Calling Macros - Syntax

[ ….].

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Example:

REPORT demo_mod_tech_macros.

DATA: result TYPE i,
n1 TYPE i VALUE 5,
n2 TYPE i VALUE 6.

DEFINE operation.
result = &1 &2 &3.
output &1 &2 &3 result.
END-OF-DEFINITION.

DEFINE output.
write: / 'The result of &1 &2 &3 is', &4.
END-OF-DEFINITION.

operation 4 + 3.
operation 2 ** 7.
operation n2 - n1.

This produces the following output:

The result of 4 + 3 is 7

The result of 2 ** 7 is 128

The result of N2 - N1 is 1

In this example, the two macros operation and output are defined. output is nested in operation. operation is called three times with different parameters. Note how the placeholders &1, &2,... are replaced in the macros.