Why does everybody typedef over standard C types?

Question

If you want to use Qt, you have to embrace quint8, quint16 and so forth.

If you want to use GLib, you have to welcome

Answer 1

For the older libraries, this is needed because the header in question (stdint.h) didn't exist.

There's still, however, a problem around: those types (uint64_t and others) are an optional feature in the standard. So a complying implementation might not ship with them -- and thus force libraries to still include them nowadays.