Anyone able to assist?

Dude, I don't know what to tell you. You are not even making an attempt. You are simply pasting your assignment into this board hoping someone does it for you. First at least make some attempt, show us what you've got, how you tried to solve it and where you are stuck. Then we can suggest/help you.

Where do you go to school?

email this guy.. I've got some help in the past, alvinsnoop at gmail

i could do this for you, but you are not simply putting any effort. At least try something and ask if you get stuck. No one is going to write codes for you. we got work to do as well. :p

Alece, plz check your msg and let me know what you think?

After debugging it will not read contens from sales.txt file. I need it to read the file not show the output.

using fopen_s syntx

thanks

Please don't make me log in to that dog ugly UI to check ur messages. anything just paste here.
might take a look at it later if m free. gotta do shit ton of coding for work.