Algebraic Calculator

Version

1.0 - Initial release

About

Algebraic calculator written using the command design pattern. Supports the following operations:

• Addition
• Subtraction
• Multiplication
• Division
• Reciprocal of x
• Factorial of x
• Order of operations including parentheses

How to use

Executable is located in the Binary folder.

• A - All clear
• C - Clear last entered number
• Q - Quit

Please note!

Decimals

• Decimals are supported, however they require at least one left-hand digit for the calculator to process them correctly (0.1 works, .1 does not).

Factorials

• Factorials can only be calculated using non-negative integers. If the user attempts a decimal factorial, the calculator will round to nearest int.
• Negative and very large values will crash the calculator.

Future TODO

• Build a more complete test library
• Implement an in-app help screen activated via the 'H' key
• Clean up View.cs
• Better, more verbose error handling on bad user input
• Refactor Calculator.Evaluate()
• Better decimal handling
• Better factorial handling