Sub Bouton1_QuandClic()
Dim aladouzaine As Integer
Dim uneboitepourlapetitedame As Integer
Dim oeuf As Integer
aladouzaine = Application.InputBox('Combien d'oeufs, ma petite dame ?', Type:=1)
If aladouzaine = 0 Then Exit Sub
oeuf = 0
Do While oeuf + 11 < aladouzaine
uneboitepourlapetitedame = uneboitepourlapetitedame + 1
oeuf = oeuf + 12
Loop
MsgBox uneboitepourlapetitedame & ' boite(s).'
End Sub