For this assignment you are to create a calculator application using C#/WPF. Dont use Windows Forms or other technology that is not the focus of this class. You may find example projects MathsOperators to be useful for your project.

1. (30 points) Design and implement a calculator UI. You may use the figure above as a reference, or choose any design that works well for a standard calculator. 2. (60) Implement a basic calculator that does two positive floating point number addition, subtraction, multiplication and division using the calculator keys.

3. (10 points) Additional features that make the calculator more user friendly. You can decide what these features are, and document them in the README file or in your submission note section. Some example features: exception handling, clear function, additional math operations, performing a continuous operation between numbers without pressing the equal button, etc.

4. (Bonus10 points) Negative floating point numbers handling.

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