CalculatorsLesson 174Free preview

Math Expression Evaluator

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Summary

Math Expression Evaluator reads mathematical expressions such as (3 + 5) x 2 and calculates the result in the order of operations. The multiplication and division operators are processed before addition and subtraction, while parentheses change priority. For user input, avoid eval() as it can execute malicious code; use a special parser.

Key points

Operating sequence: curve, rank, times or divide, then add or subtract
Operators with equal priority are evaluated from left to right
The parentheses change the order of evaluation
Do not use eval() for unreliable input
Handles the zero division and decimal formatting correctly

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