Question: For c++: To check whether char variable ch is a digit, use the function isalpha(ch) islower(ch) isalnum(ch) isprint(ch) isdigit(ch)

For c++:

To check whether char variable ch is a digit, use the function

isalpha(ch)
islower(ch)
isalnum(ch)
isprint(ch)
isdigit(ch)

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