# Title: Rain or Shine
# Author: [Your Name]
# Date: [Insert Date]
# Version: 2.0
# Purpose: This program asks the user about the weather and suggests whether they should wear a raincoat. 
#           Version 2 includes input validation to ensure the user enters only 'rain' or 'shine'.

# Ask the user about the weather and validate input
while True:
    weather = input("What is the weather doing (rain or shine)? ").strip().lower()
    if weather in ["rain", "shine"]:
        break
    else:
        print("Invalid input. Please enter either 'rain' or 'shine'.")

# Check the weather and display an appropriate message
if weather == "rain":
    print("You should wear a raincoat.")
else:
    print("You don’t need a raincoat.")

# End of program message
print("The program has ended.")