Structure size and binary format

Hi all,

I've been wondering when I write a structure like:

struct {
int a;
unsigned int b;
float c;
} mystruct;

And then I'm using this as a record for a binary file. The problem is
that the size of the types is different on different
platforms(win/lin/osx) so if a file was copied on another platform and
attempted to be read then the first say 16 bytes could be regarded as
the integer a but it could have been created on system where integer
was 32 bytes. Is there a portable solution to this? Moreover, I've been
looking for some resource on designing your own binary format and I
couldn't find anything apart from short tutorials how to read binary
files. Are there any good resources?

Thanks a lot

.

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