An escape sequence for vertical tab. O In O lb Oit A function that returns non-zero if char is a letter of the alphabet otherwise zero is returned.

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An escape sequence for vertical tab.
\n
O lb
A function that returns non-zero if char is a letter of the alphabet otherwise zero is returned.
isal()
isalpha)
O isalphabet()
O isletter()
A function that returns non-zero if char is a punctuation character, excluding the space; otherwise zero is
returned.
issymbol0
ispunct)
O isspecial()
O ispunctuation)
Transcribed Image Text:An escape sequence for vertical tab. \n O lb A function that returns non-zero if char is a letter of the alphabet otherwise zero is returned. isal() isalpha) O isalphabet() O isletter() A function that returns non-zero if char is a punctuation character, excluding the space; otherwise zero is returned. issymbol0 ispunct) O isspecial() O ispunctuation)
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