Final answer:
The program uses a while loop to interactively ask the user for a letter, displays it, and then checks if the user wants to continue. It uses input and print functions along with a break statement to stop the loop when the user enters 'n'.
Step-by-step explanation:
In Python, we can write a program with an interactive while loop that asks the user to enter a letter, displays the letter, and prompts if they want to continue using the input function. Below is a sample code that achieves the expected output:
while True:
letter = input('Please enter a letter: ')
print('You entered:', letter)
continue_input = input('Would you like to enter another letter? y/n:').lower()
if continue_input != 'y':
break
The program will keep looping until the user chooses not to continue (by entering 'n'). This is a simple example of using while loops for user interaction in Python.