MAD Lab functions task

Date: 29-7-2024              Section: III-I CSE-E
Topic: Functions
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1.Write a function named printWelcomeMessage that prints "Welcome to the Online Shopping App!" to the console. 
2.Write a function named printGoodbyeMessage that prints "Thank you for visiting the Online Shopping App!" to the console.
3.Write a function named addProduct that takes a String parameter productName and prints "Product <productName> added to the inventory".
 Note: Call this function with different product names.

4.Write a function named removeProduct that takes a String parameter productName and prints "Product <productName> removed from the inventory.". 
Note: Call this function with different product names. 

5. Write a function named calculateDiscount that takes two Double parameters price and discountRate, and returns the discounted price. Print the returned value in the main function.
6.Write a function named isProductAvailable that takes a String parameter productName and returns true if the product is available in stock, and false otherwise. 
Print the result in the main function.
7. Write a single-expression function named calculateTax that takes a Double parameter price and returns the tax amount (assume a tax rate of 10%). 
Print the result in the main function.
8. Write a single-expression function named calculateTotalPrice that takes two Double parameters price and tax and returns their sum. 
Print the result in the main function.
9. Write a function named createUserAccount that takes a String parameter userName with a default value of "Guest" and prints "User account <userName> created.". 
Note: Call this function with and without passing a user name.
10. Write a function named applyCoupon that takes a Double parameter discount with a default value of 10.0 and prints "Coupon applied with <discount>% discount.". 
Note: Call this function with and without passing a discount.
11. Write a function named updateUserProfile that takes three String parameters firstName, lastName, and email, and prints "User profile updated: <firstName> <lastName>, Email: <email>". 
Call this function using named arguments.
12. Write a function named placeOrder that takes three String parameters productName, deliveryAddress, and paymentMethod, and prints "Order placed for <productName> to be delivered at <deliveryAddress> using <paymentMethod>". 
note: Call this function using named arguments and print the result.