Read file contents with unknown size

Question

I want to process the contents of a config file. The config file could be any size. I am getting a Bus Error, after the program hangs, when I run the following code:

Answer 1

You can allocate memory with malloc:

buffer = malloc(number_of_bytes_to_allocate);
if(buffer == NULL) {
    // error allocating memory
}

free when you're done with it!

free(buffer);