You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def convert_to_upper(string):
    """Function to convert the given string to all capital letters using an algorithm. 'Input should be a string."""
    result = ''
    for char in string:
        result += chr(ord(char) - 32)
    return result

print(convert_to_upper('Hello world!'))
user
(ELLOWORLD
assistant