Comment vas-tu ? (very correct but the use of 'tu' indicates that you are on first-name terms) or comment ça va ?
Informally, "Good morning to you!" would be "Bonjour à toi!" in French.
The way to greet a female friend in Italian is Ciao!("Hello!"), which also works for a male friend.
namaste
The words 'How are you', is informally said in French as 'comment allez-vous'.
toi aussi
Salut
Bonjour
Umm obviusly ur a smarta$$ bcuz era body knos how to greet ur friend by saying wahts up sexi!?!?
"Coco" in French can refer to the coconut fruit, or it can be a casual term for someone's head or brain. It can also be used informally to refer to a friend or a person.
Who are you is "qui êtes-vous ?" in French, or informally "qui es-tu ?"
Et toi? and Et vous? are French equivalents of the English phrase "How about yourself?" Context makes clear whether one "you" informally to a family member, friend or peer (case 1) or formally to an unknown senior in age or rank (example 2) suits. The respective pronunciations will be "ey twa" informally and "ey voo" formally in Alsatian and Cevenol French.
Informally "tu", formally "vous".