6.md

6. Problem: Express Route Handling

Problem Statement: You are building a web application using Express in Node.js. Create an Express route to handle GET requests to the endpoint "/greet" that takes a query parameter "name" and returns a personalized greeting. If the name parameter is not provided, the default greeting should be "Hello, Guest!".

Function Signature:

/**
 * Handles GET requests to "/greet" endpoint
 * @param {Object} req - Express request object
 * @param {Object} res - Express response object
 */
function greetHandler(req, res) {
  // Your implementation here
}

Expected Output:

• If the "name" parameter is provided: "Hello, {name}!"
• If the "name" parameter is not provided: "Hello, Guest!"

Test Cases:

1. Request to /greet?name=John should return "Hello, John!"
2. Request to /greet should return "Hello, Guest!"