Write a program that request a student LastName and Social Security Number. Your program should read the student's Lastname and Social into one variable and must consist of a function that takes as input a string, consists of a LastName, Social and returns the altered string. Use the string function find to find the index of a ","; the function erase to remove the LastName of the string; and the function replace to replace the first 5 characters of the Social with x's.