BAS Example

%./run -e 'LETb=1:FORi=0TO9:PRINTa:LETc=a+b:LETa=b:LETb=c:NEXT'

0
1
1
2
3
5
8
13
21
34

%cat a.bas

' SAMPLE PROGRAM
PRINT 42
INPUT x
PRINT x*x
PRINT 1+2*3, (1+2)*3
LET a=17 : LET b=a+6 : PRINT a+b
FOR i=0 TO 10
PRINT i*i
NEXT i
END

%./run a

42
? 9
81
7
9
40
0
1
4
9
16
25
36
49
64
81
100