pine
/
examples
/
factorial.pn
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61# Pine factorial
# dbg lne on
mov s 'done'
mov ec 0
lbl main
run input
run factorial
run print
run success
lbl input
mov fac 0
mov zero 0
mov q 'factorial calculator'
prt q
ask fac
cmp fac zero
jle error
psh fac
ret
lbl factorial
mov inc 1
mov index 1
mov res 1
mov fac 0
pop fac
lbl loop
cmp index fac
jgt end
mlt res index
add index inc
jmp loop
lbl end
psh res
ret
lbl print
mov res '> '
mov val ''
pop val
add res val
prt res
ret
lbl success
# prt s
ext ec
lbl error
mov s 'error: num must be > 0'
mov ec 1
prt s
ext ec