This is a calculator I built using react. Currently supports the operations +, -, *, /, modulus, and negating. App.js does an infix to postfix conversion, then a calculation on postfix using a stack. (App2.js implements the calculations using recursion).
Modulo operations are taken as the same precedence as multiplication and division. The negation operator has precedence over all operators including ^.
Press 2nd to reveal more operations!
AC clears the whole display; C deletes each entry one by one.
If the most recent entry is a number, +/- negates that number. If the most recent entry is not a number, it adds a negative sign to the end of the current expression
Ans button inputs the most recent answer into the current expression. If the current expression ends with a negative sign, the value of Ans is negated.
Parentheses () work as expected. However, you must specify an operation to do with an expresion insdie (). For example, typing in operations like x(y) are not supported. (The calculator won't even let you input that). Instead, input x*(y).
In the project directory, run:
Runs the app in the development mode.
Launches test runner in the interactive watch mode
Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.
The build is minified and the filenames include the hashes