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ispunct() -- ctype Function (libc) Check if a character is a punctuation mark #include <ctype.h> int ispunct(c) int c; ispunct() tests whether the argument c is a punctuation mark, i.e., neither an alphanumeric character nor a control character. It returns a number other than zero if the character tested is a punctuation mark, and zero if it is not. ispunct() assumes that c is an ASCII character or EOF. Example For an example of how to use this macro, see the entry for ctype.h. See Also ASCII, libc ANSI Standard, §7.3.1.8 POSIX Standard, §8.1