How's the input/output done in C? (First timer)

[digital_mango]

Hi,
This is the first time I have come to SPOJ.

I was wondering how do I give input and print Output for codes for SPOJ.
I use C.

Do I use scanf , printf, etc.?
Or do I read a text file and write to a text file ?

What exactly is the way.

Will be great if you can give me an example solution to any problem ... Just the input / output part will be enough ....

Thanks in advance,
Vineet

[TripleM_sof]

Use standard input/output (scanf/printf etc). See the C/C++ forum for an example: spoj.pl/forum/viewtopic.php?t=21