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Arithmetic evaluation: Difference between revisions
remove from Category:Arithmetic operations: This is not primarily an arithmetic task, it is a data structure and parsing task.
(remove from Category:Arithmetic operations: This is not primarily an arithmetic task, it is a data structure and parsing task.) |
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{{task
Create a program which parses and evaluates arithmetic expressions. Requirements: an [[wp:Abstract_syntax_tree|abstract-syntax tree]] (AST) for the expression must be created from parsing the input. The AST must be used in evaluation, also, so the input may not be directly evaluated (e.g. by calling eval or a similar language feature.) The expression will be a string or list of symbols like "(1+3)*7". The four symbols + - * / must be supported as [[wp:Binary_relation|binary relations]] with conventional precedence rules. Precedence-control parentheses must also be supported.
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