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Revision as of 12:35, 4 January 2015

The not macro, which is part of <iso646.h>, is a convenient object-like macro name that expands to the ! operator. The macro was added in Normative Addendum 1 in an effort to provide support for international character sets that might not have the ! symbols.

Synopsis

#include <iso646.h>
#define not !

Description

The not object-like macro expands to the ! operator.

Example

#include <iso646.h>

int main ()
{
    if (not(2 == 1))
        return 1;
    return 0;
}