How do you say hello im having sandwichs in french?

There are a few ways to say "hello, I'm having sandwiches" in French, depending on the context and formality:

Informal:

* Salut, je mange des sandwichs. (Most common and natural)

* Coucou, je mange des sandwichs. (Slightly more playful)

* Bonjour, je mange des sandwichs. (Slightly more formal than "Salut")

Formal:

* Bonjour, je déjeune des sandwichs. (This emphasizes that you're having them for lunch)

* Bonjour, je prends des sandwichs. (More literal, emphasizing that you are taking sandwiches)

Important note: The correct plural form for "sandwich" in French is "sandwichs".

You can also add more details, such as:

* Je mange des sandwichs au jambon. (I'm eating ham sandwiches)

* J'ai des sandwichs pour le déjeuner. (I have sandwiches for lunch)

Choose the option that best fits the situation and the level of formality you want to convey.