Chapter 10 Characters, C-Strings, and More about the string Class Now let's look at Program 10-10, which uses one of the C+ 11 string-to-number con- version functions, stof. It allows the user to enter a series of values, or the letter Q or q to quit. The average of the numbers is then calculated and displayed. Program 10-10 // This progran denonstrates the tolower and stol functions. 2 #include 3 #includecctype> 4 #include (total) I count; cout