Quote

c A signed char (8-bit) value.
C An unsigned char (octet) value.
W An unsigned char value (can be greater than 255).

s A signed short (16-bit) value.
S An unsigned short value.

l A signed long (32-bit) value.
L An unsigned long value.

q A signed quad (64-bit) value.
Q An unsigned quad value.
(Quads are available only if your system supports 64-bit
integer values _and_ if Perl has been compiled to support those.
Raises an exception otherwise.)

1
2
3
4

uint8t zahl1;
 uint16_t zahl2;
 int32_t zahl3;
 uint8t zahl1;