In c++ please.

a)- Write a program that compares two strings input by the user. The program should state whether the first string is less than, equal to or greater than the second string b)- Write a program that inputs a line of text (string of characters), scans the string and splits it into words and output each of the words. Your program should not output any text delimiters c) Write a program that takes three strings from the user, compare the strings, and output them concatenated (as one string). The concatenated string should contain the three strings from shorter to longer. d) Write a program that takes a string from a user, and then output the string without any vowels