Write a program that accepts as input a sentence in which all of the words are run together but the first character of each word is uppercase. Convert the sentence to a string in which the words are separated by spaces and only the first word starts with an uppercase letter.

For example the string "StopAndSmellTheRoses." would be converted to "Stop and smell the roses."

Then prompt the user for a filename and write the new string to the file.

Make sure you use all the techniques we have learned in class $-$ including functions, exception handling and data structures. Make sure ALL inputs are valid and the user asked to reentered them if not.