Question

I am doing a c programming assignment where I am working with command-line arguments. One of the notes says that if the file you work with (to my understanding, it will always be “list.csv”) is not yet created to create one. Just like vim does when you write “vim new.txt” and new.txt does not exist yet.

I am just wondering if there is a function that tests for the existence of a file? Or do I use some sort of try/catch block?

Answer 1

you can use fopen(). the second parameter says, what to do. Read, create+write, append+create(if not existent)

one way is to use fstat() on the filename.

under UNIX try ‘man fstat’