readme.txt

《C++ Primer》第四版题解及头文件

Some programs read cin for their input.
Sample data files are in the data directory:

     File           Programs that use that input file
     ----           --------
   book_sales       avg_price, item_io
   add_item         add_item, add_item2
   add              add, count, userforcount
   my_sum           my_sum

Programs not listed above print output and do
not read any input