Please use maps to do this

Write a C++ program that reads from the standard input and counts the number of times each word is seen. A word is a number of non whitespace characters separated by whitespace. After all input has been processed print each word that was seen the largest number of times on a line by itself. The words should be printed alphabetical order For example, with the input Hello ... I said Hello are you there? your program should print out Hello since it was the word that appeared most frequently in the input. With the input bow wow bow wow the program should print out two lines: bow WOW Because both of those words appeared most frequently in the input. If there is no input, your program should generate no output