How do you use ciao in French?

"Ciao" is actually an Italian word, not a French one. In French, the equivalent of "Ciao" is "Salut!"

Here's how you can use it:

* As a greeting: "Salut!" is a casual greeting that can be used with friends, family, and people you know well. It's similar to "Hi!" or "Hello!" in English.

* As a farewell: "Salut!" can also be used as a farewell, similar to "Bye!" or "See you later!" in English.

Here are some examples:

* "Salut, Marie! Comment vas-tu?" (Hi, Marie! How are you?)

* "Salut les amis! On se retrouve demain?" (Hi friends! See you tomorrow?)

* "Salut, à plus tard!" (Bye, see you later!)

However, it's important to note that while "Salut!" is a common greeting, it is considered informal. In more formal situations, you might use "Bonjour" (Good morning/Good day) or "Bonsoir" (Good evening).