variable file name in open system call

[vishi]

hii,
i am trying to simulate an ftp server and client in c on 2 different systems. the client askes for a file ant the server sends it the file. the problem here is that if i have to open the file before i can send its content to the client. but to open the file i've to give the file name as a constant string type. but the name was sent by the client and was thus saved in a character array. when i tried to give variable's name in place of the filename, the code doesnt work. how can i overcome this problem??

plzz anyone reply soon
thx

[meton_magis]

I would have posted this question in the programming section on the forum. Also, we have no idea what language you're using. Even 2 languages as similar as C and C++ would have 2 totaly different answers.