How do you determine the size of a file in C?

Question

How can I figure out the size of a file, in bytes?

#include 

unsigned int fsize(char* file){
  //what goes here?
}

Answer 1

You can open the file, go to 0 offset relative from the bottom of the file with

#define SEEKBOTTOM   2

fseek(handle, 0, SEEKBOTTOM)  

the value returned from fseek is the size of the file.

I didn't code in C for a long time, but I think it should work.