Write a Python program that inputs a single character and checks to see if it is an uppercase letter.

Your program should work as follows:

• Prompts the user to enter a character and stores it in a suitable variable.
• Determines if the entered character is an uppercase letter (between 'A' and 'Z' inclusive).
• Outputs UPPERCASE if the character is uppercase.
• Outputs NOT UPPERCASE if the character is any other character.

You should use meaningful variable name(s), correct Python syntax, and proper indentation in your answer.