| => java bigcalc/Main
enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> e
value: 0000000000.10000000000
.1

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: -.1
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: -10.00001
-10.00001

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: -10
-20.00001

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> s
value: -000009.900000
-10.10001

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> r
10.10001

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> m
value: 0000000000009
90.90009

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> m
value: 0.2
18.180018

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> c
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: 3.314.00
badly formed number: 3.314.00
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: --0.03
badly formed number: --0.03
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> c
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: +0.1
badly formed number: +0.1
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> a
value: .0001
.0001

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> s
value: 0.00010000000000
0

enter a value: e     add: a
subtract: s          multiply: m
reverse sign: r      clear: c
quit: q
-> q