The mode BOOL is named after George
Boole, the distinguished nineteenth century
mathematician who developed the system of logic which bears his name.
There are only two values of mode BOOL
, and their
denotations are TRUE and
FALSE. Let us declare two
identifiers:
BOOL t = TRUE, f = FALSE
The print phrase, when fed with
Boolean values prints T
for
TRUE
, and F
for FALSE
, with
spaces neither before nor after. Thus
print((t,f,t,f,t))produces
TFTFT
on the screen.