Necesito mas c++ ayuda!!!! (Help me viva) Just a little?

http://faculty.cs.niu.edu/~byrnes/csci240/pgms/240pgm3.htm

 

Yes, so I'm a total noob.  What would be the best way to write this program?  Is "if, else" the best way? 

 

or do I need to use something like "while" or "do while" ?

 

Please, just something to start on!!