Examples: Recognizing Sentences

[   ] .. Index to Examples.
[   ] 4/01 Comma-separated sums and differences of one or more decimal, octal, or hexadecimal numbers.
[   ] 4/02 Sums and differences of signed numbers?
[   ] 4/03 Sums and differences of signed numbers.
[   ] 4/04 'if' statement with balanced 'fi'.
[   ] 4/05 The 'dangling else' issue.