Private Sub Form_Click( )
a= 1: b= 1
Print"A="; a; "B="; b
Call mult(a, b)
Print"A=";a; "B=";b
End Sub
Sub mult(x, y)
x=2* x
y=3*y
A=1 B=1
A=1 B=3
A=2 B=3
A=2 B=1