What is a special character when creating a password?

this is so hard i can think of anything when i try something it won't let me do it

if the question is answer the best i will give a crown

Write a program that reads a set of floating-point values. ask the user to enter the values, then print • the average of the values. • the smallest of the values. • the largest of the values. • the range, that is the difference between the smallest and largest. of course, you may only prompt for the values once.