You are going to write a C++ program that determines information about a series of strings. For the strings entered you need to determine the following:

1. How long are all the strings together.

2. How many r's are there in all the strings combined?

3. What is the substring starting at index 5 and going to 10 characters in sentence 2 entered?

You will use the following four strings to determine the information above. You should ask the user for the strings, so other strings could be used.

Four score and seven years ago our fathers brought forth on this continent,

a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.

Now we are engaged in a great civil war, testing whether that nation,

or any nation so conceived and so dedicated, can long endure.