C++ Named Operators
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In C++, there are eleven keywords which are simply alternate
spellings of operators normally written with punctuation. These
keywords are treated as such even in the preprocessor. They function
as operators in `#if', and they cannot be defined as macros or
poisoned. In C, you can request that those keywords take their C++
meaning by including `iso646.h'. That header defines each one as a
normal object-like macro expanding to the appropriate punctuator.
These are the named operators and their corresponding punctuators:
Named Operator Punctuator
`and' `&&'
`and_eq' `&='
`bitand' `&'
`bitor' `|'
`compl' `~'
`not' `!'
`not_eq' `!='
`or' `||'
`or_eq' `|='
`xor' `^'
`xor_eq' `^='