On: The earliest known versions of Dennis Ritchie's fi...

[kccqzy]

Or rather, undeclared types are assumed to be int. Is that what you are talking about?

[alexforster → kccqzy]

The keyword "auto" means int?

[swolchok → alexforster]

It means automatic storage duration (i.e., on the stack). https://stackoverflow.com/questions/2192547/where-is-the-c-a...

[cygx → alexforster]

'auto' means 'automatic storage duration' and does not carry type information.