Write a C++ program that reads in and prints a text, line by line, and calls a series of functions. The main program calls a function diffwords () to count the number of different words in the entire text (ignoring case). It also calls a function wordcount () to count the number of times each word appears in the text. Then it calls a function printcount () to print a list of all the words in the text, together with the count of the number of times they appear. For example, if a word occurs twice in the text, it appears only once on the list, with a count of 2. Print the list of words in alphabetical order. Use other functions wherever appropriate. For example, suppose the text is this: The elephant ate the banana and the giraffe ate the banana. The function diffwords () produces a count of 6 ("the", "elephant", "ate", "banana", and "giraffe"): wordcount() produces this list: and 1 ate 2 banana 2 elephant 1 giraffe 1 the 4 Please try to use sorted methods instead of using any vector method thanks