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Rajkumar122f

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calculator

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Fix all calculation inaccuracies in the calculator app by addressing these specific problems: 1. **Operator Precedence Failure**: - Current behavior: `2 + 3 × 4 = 20` (incorrect) - Required: `2 + 3 × 4 = 14` (× before +) - Solution: Use math.js for correct order of operations 2. **Percentage Calculation Error**: - Current: `100 + 10% = 100.1` (invalid) - Required: `100 + 10% = 110` (10% of 100 = 10) - Fix: Implement percentage as `currentValue × (percentage/100)` 3. **Decimal Handling Flaw**: - Current: Allows multiple decimals (`5.5.5`) - Required: Only one decimal per number segment - Solution: Check last number segment before adding decimal 4. **Scientific Function Inaccuracy**: - Current: `sin(π/2) ≠ 1` (incorrect) - Required: Accurate scientific calculations - Fix: Use math.js constants/functions 5. **Division by Zero Handling**: - Current: `10 / 0 = Infinity` or crashes - Required: Show "Error" for division by zero - Implementation: Add zero-division guard clause 6. **Memory Function Defects**: - Issues: M+/M- don't accumulate, MR doesn't recall - Required: Working memory store/recall - Fix: Implement stateful memory value 7. **Parentheses Mismanagement**: - Current: `(2 + 3) × 4 = 20` fails - Required: Correct nested parentheses handling **Implementation Requirements**: 1. Replace all evaluation with math.js: ```javascript import * as math from 'mathjs'; const result = math.evaluate(expression.replace(/×/g,'*').replace(/÷/g,'/')); - Initial Deployment