Calculator App (Vite + React + Node.js)

This is a simple calculator app built with Vite (React) for the frontend and Node.js (Express) for the backend. The app allows user to enter two numbers and select an operation (+, -, *, /). The calculation is performed on the backend, and the result is displayed in the UI.

How to Run

1. Start the backend server

node calculator-server.js

The backend will run on http://localhost:3000

2. Start the frontend (Vite React app)

npm run dev

The frontend will run on http://localhost:5173

###3. Run the test(back-end side): npx codeceptjs run

Features

• Enter two numbers
• Choose an operation (+, -, *, /)
• Result is calculated on the backend
• Simple, modern UI