For many of the programs that expect input, we have provided

small, sample input files. Input files are always found in a

subdirectory named "data". For example, the program add_item

in directory 1 reads Sales_item transactions from the

standard input but does *not* prompt for input.

If the program is invoked:-

For many of the programs that expect input, we have provided

small, sample input files.　Input files are always found in a

subdirectory named "data".　For example, the program　add_item　

in directory 1 reads Sales_item transactions from the

standard input but does*not* prompt for input.　

If the program is invoked: