I am having some trouble with the c++ problem below. I have been working for hours and cannot figure it out. If anyone could point me in the right direction that would be really helpful. Thank you!!! Write a c++ program that reads in a line consisting of a student’s name, Social Security number, user ID, and password. The program outputs the string in which all the digits of the Social Security number and all the characters in the password are replaced by x. (The Social Security number is in the form xxx-xx-, and the user ID and the password do not contain any spaces.) Your program should not use the operator [] to access a string element. Use the appropriate functions described in Table 7-1 below.