Given a string variable as argument that contains chars like "!" : Write functions to: (a) Determine if the string has only alphabetic letters (b) Remove "!" characters and whitespace from the string (c) Find the location of the first "!" (d) Find the location of the last "!" (e) Convert spaces into underscores and letters into lowercase letters For example: Answer: (penaity regme: U,U,U,U,U,b,10,15,2U,% )