Fibonacci sequence: Difference between revisions

Variables in bootBASIC are 2 byte unsigned integers that roll over if there is an overflow. Entering a number greater than 24 will result in an incorrect outcome.

<syntaxhighlight lang="BASIC">

10 print "Enter a ";

20 print "number ";

30 print "greater ";

40 print "than 1";

50 print " and less";

60 print " than 25";

70 input z

80 b=1

90 a=0

100 n=2

110 f=a+b

120 a=b

130 b=f

140 n=n+1

150 if n-z-1 goto 110

160 print "The ";

170 print z ;

180 print "th ";

190 print "Fibonacci ";

200 print "Number is ";

210 print f

</syntaxhighlight>