In Class Week10

1. Copy the files for today's class into your week10 directory, then change into that directory and check the contents:

        % cd ~/cs21/
        % mkdir week10
        % cd  week10
        % cp ~newhall/public/cs21/week10/*  .
        % ls
   

2. Open chars.c and we will go over this together.

3. Open copystr.c and implement and test the following incrementally:
   1. add code to main to read in a string entered by the user into the name string
   2. CopyString function
   3. InvertCase function