ABAP TYPES IMPLICIT Statement syntax and functionality in SAP

TYPES - implicit

Short Reference

ABAP Syntax(Obsolete) TYPES { dtype }
| { dtype(len) }
| { dtype LENGTH len }
| { dtype TYPE c|n|p|x }
| { dtype(len) TYPE p}
| { dtype TYPE p LENGTH len}
| { dtype TYPE p DECIMALS dec}.

What does it do? Obsolete short forms of the statement
TYPES with reference to a predefined elementary type abap_type .
If TYPE abap_type is not specified, the type is set implicitly to the standard type c .
If len or dec is not specified for the ABAP types c
, n , p , and x , the length is set to the type-compliant standard length . No decimal places are set for p . This is only permitted outside of classes or interfaces.
Latest notes: All additions should be specified in full, to make them easier to read.

Bad example
TYPES: t1,
t2 TYPE p.

Good example
TYPES: t1 TYPE c LENGTH 1,
t2 TYPE p LENGTH 8 DECIMALS 0.

ABAP TYPES IMPLICIT Statement syntax, information and example SAP source code