How do I dump an arbitrary struct in C?

Question

I don\'t know which direction to go,perhaps something like reflection will help?

Answer 1

What do you want to do with your file once you've got it? If it's going to be read back in at a later time just use fread and fwrite, like

struct foo * bar;
fwrite(bar,sizeof(*bar),1,stdout);

...

fread(bar,sizeof(*bar),1,stdin);

This will give binary output that's dependant on your compiler/platform, as long as those are unchanged you should be fine. From there you can also feed the file into a hex reader etc., though you'll need to know the layout of the struct to do anything useful with it.