To avoid problems, use these following options
    -std=c99 -Wpedantic
You can just put the following in a Makefile
    CFLAGS=-std=c99 -Wpedantic

When using scanf
    (space) matches 0 or more space
       Actually most specifier matching leading whitespace
          but (space) is clearer
       whitespace includes "newline" characters
    %[....] matches characters in .....
    %[^....] matches characters not in .....
    %[ matches characters, numbers

What if the string has spaces immediately before the comma (,)
    well..... is that covered in the rules?
       Probably, but you can just look at the read string
       Last characters of strings are a position strlen(s)-1, strlen(s)-2, ...

What about input items spread accross several lines
    well..... is that covered in the rules?
       University of North Carolina at Asheville,
       Asheville,
        3821
    If you want to fix this, you can
       read to an entire line with fgets
       read characters with fgetc