type CWord = CCardinal;
CCardinal is an unsigned integer type. On some platforms it is 32 bits wide and thus has a range of 0 .. 4294967295. It is the same as CCardinal.
CWord in GNU Pascal is compatible to unsigned int in GNU C.
There are lots of other integer types in GPC, see Integer Types.
CWord is a GNU Pascal extension.
program CWordDemo; var a: CWord; begin a := 42; WriteLn (a) end.
CCardinal, Integer Types, Subrange Types.