Common operator notation: Difference between revisions

Revision as of 01:22, 11 October 2005

Revision as of 02:48, 10 December 2006

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prefix operators '+', '-', and 'sin', for example, are all

associative prefix operators. The unary postfix operator '!' and,

in the [[C (programming language)|C]] language, the post-increment and post-decrement operators

"++" and "--" are examples of associative postfix operators. When

more than one associative prefix or postfix operator of equal

precedence precedes or succeeds an operand, the operators closer to

the operand associate first. For example, -sin x = -(sin(x)) and, in [[C (programming language)|C]],

the expression "x++--" is equivalent to "(x++)--". When prefix and postfix operators of equal precedence coexist,

the order of association is undefined.

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# Among operators of equal precedence, associate operands with operators according to the associativity of the operators.

Note that an infix operator need not be binary. [[C (programming language)|C]], for example, has a ternary infix operator "[[?:]]". <!-- speculation Would

it, then, be accurate to call parenthisization an n-ary bifix

operation? :) -->