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This page displays the COHERENT manpage for NUL [Definition].
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NUL -- Definition NUL is the ASCII null character `\0' -- i.e., the character with the value zero. Do not confuse it with the null pointer NULL or with the empty string "". A C-language string is always terminated with a NUL. The empty string "" is an array of chars with only one element, namely a NUL. See Also ASCII, NULL, Programming COHERENT