On: Dennis Ritchie’s first C compiler (c. 1972)

[tirrex]

https://github.com/mortdeus/legacy-cc/blob/ccbe90a2803e2cc7e...

“auto” exists in the initial version.

[volta83 → tirrex]

And what does it mean there? (automatic storage duration)

[jstanley → volta83]

It means it lives on the stack, so it "exists" until the function returns.

[wruza → jstanley]

That is true, but more nuanced. https://www.tutorialspoint.com/cprogramming/c_storage_classe...

[tirrex → volta83]

Do you mean automatic type deduction?

Edit : I know it’s also storage specifier but it also does type deduction here, hope I’m not confused with the terminology

[volta83 → tirrex]

It doesn't do type deduction there.

In original C you could declare variables without a type, and these variables with auto have no type.

So this "auto" is essentially saying "this variable without a type uses automatic storage". That's a completely different language feature from "deduce the type of this variable".

[mianos → volta83]

A variable without a type is 'int' so ```auto xx;``` means an int on the function local variable stack.

[tirrex → volta83]

Thanks.

[nix-zarathustra → tirrex]

No, it doesn't do type deduction. Without specifying the type, it assumes a type of int. Everything in C revolves around ints.

[jcelerier → tirrex]

here it means automatic storage duration