Write a program using inputbox(),msgbox() and perform various arithmetic expression

Write a program using inputbox(),msgbox() and perform various arithmetic expression is very important question in vb .net so let's get started:

public class form1
Dim i, j, h as integer 
i = input value box ("Enter the first value");
j = input box ("Enter the second value");
h = val(i) + val(j)
msgbox("Addition =" Rh)
End sub