Infix Notation

Infix notation is a notation for expressions in which a binary operator is placed between its two operands, as in . It is the usual notation for arithmetic expressions. Parentheses and precedence rules determine the grouping of more complicated expressions. For example, has value 23, whereas has value 35.

In Polish notation, also called prefix notation, each operator precedes its operands. In reverse Polish notation, also called postfix notation, each operator follows its operands.