A shipping company uses the following function to calculate the cost (in dollars) of shipping based on the weight of the package (in pounds).

3.5, if 0 < w < = 1

c(w) = 5.5, if 1 < w < = 3

8.5, if 3 < w < = 10

10.5, if 10 < w < = 20

Write a program that prompts the user to enter the weight of the package and display the shipping cost. If the weight is greater then 50, display a message "the package cannot be shipped."