Write a program that inputs a string of comma separated test scores from the user and prints out a histogram of the scores. The histogram should have one row on it for each distinct test score, followed by one star for each test score of that value. For example, if the tests scores in the file were 55, 80, 80, 95, 95, 95 and 98, the output to the screen should look like:

55 *

80 **

95 ***

98 *