[mark-r]

That's the thing, they're not a type - they're just an array of char with an unspecified length, indistinguishable from any other array of char or pointer to char. Only the convention of ending them with a null character makes them usable at all.

[Skunkleton]

printf("%lu\n", sizeof("Well, actshully")); -> 16

[rightbyte]

One could say that C has a different type for each string size plus the joker pointer to char.