Read a sentence from the user.
Convert the entire sentence to uppercase and print it.
Count and print the number of characters (including spaces) in the sentence.
Replace all occurrences of the letter 'a' with '@' and print the modified sentence.
Check if the sentence starts with the word 'The' (case-sensitive), print True or False
A sentence
Input sentence in upper case
Number of characters
Sentence with 'a' replaced
True/False (case sensitive)