The programm can parse and calculate different mathematical expressions.
- calculate the simplest arithmetic operations: "+", "-", "*", "/", "%", "!", "p" (exponentiation p), "s" (sqrt)
- set and use variable values
- parse expressions with brackets and various mathematical expressions including all possible arithmetic operations and setted variables
- use ";" in the end of the string (!!!)
- to calculate simple mathematical expression just type it
- to use variables you need to set them first
- to set variables you need to type "let [variable_name] = [value];"
- [variable_name] can be only one (lowercase or uppercase) letter (but not "p", "s" or "q" as it is already in list of arithmetic operations or used for service)
- to change variable value use "let [variable_name] = [value];" again
- to exit the programm type "q"
