What Is The Difference In Data Type "x" And "p"?

1.	What Is The Difference In Data Type "x" And "p"?
Answer» In MVS assembler data type X denotes hexadecimal data type which unsigned pack. SUPPOSE you define VAR1 as "VAR1 DC X'01'". It will occupy 1 byte in the memory and stored as: 0 in the zoned nibble and 1 in the numeric nibble. P denotes the packed data type, similar to COMP-3 in COBOL. if you declare any variable with this data type then it MUST have a sign byte at last nibble. See following example: VAR2 DC P'1' it will occupy one byte in the memory and stored as '1C'. In MVS assembler data type X denotes hexadecimal data type which unsigned pack. suppose you define VAR1 as "VAR1 DC X'01'". It will occupy 1 byte in the memory and stored as: See following example: VAR2 DC P'1' it will occupy one byte in the memory and stored as '1C'.

Answer»

In MVS assembler data type X denotes hexadecimal data type which unsigned pack. SUPPOSE you define VAR1 as "VAR1 DC X'01'".

It will occupy 1 byte in the memory and stored as:

0 in the zoned nibble and 1 in the numeric nibble.
P denotes the packed data type, similar to COMP-3 in COBOL.
if you declare any variable with this data type then it MUST have a sign byte at last nibble.

See following example:

VAR2 DC P'1'

it will occupy one byte in the memory and stored as '1C'.

In MVS assembler data type X denotes hexadecimal data type which unsigned pack. suppose you define VAR1 as "VAR1 DC X'01'".

It will occupy 1 byte in the memory and stored as:

See following example:

VAR2 DC P'1'

it will occupy one byte in the memory and stored as '1C'.

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