- Write a stored function that takes the name of the city where the patient lives. The value return will be based on the following table:

City	Discount
Carbondale	20%
Anna	10%

No discount is given to patient that lives in any other cities. Call this function from anonymous block. Allow the user to enter the patient ID. Calculate and display the amount that the patient has to pay.

Expected output:

Enter the patient ID: 331

He/she is the patient of Dr. Smith

Charge per appointment for Dr.Smith is RM 25 Please pay only : RM 22.5