Math calculator

Calculator evaluates expression by converting Infix notation to Postfix.

Calculator has several types of expression elements:

• number (float with point)
• constant (PI, E)
• operator (+, -, *, /)
• function (sin, cos)

Usage

1. Enter your expression to console
2. Get result

Attention: Current realization of parser can parse only elements between which exists whitespace.

Example:

cos ( 1.5 + 1.5 ) / 3

Extension

Adding new expression elements

1. Choose what type of element you want to add
2. Inherit new element class from base element
3. Define class attribute StringDefinitionAttribute with string value of element
4. Add implementation logic of your element
5. ???
6. Profit