Public Function test() As Integer
Dim x1 As Integer = 802634327
Dim x2 As Integer = -1708979286
Dim x3 As Integer = x1 - x2 'ergibt 2.511.613.613 und damit Fehler (Überlauf)
Return x3
End Function

public int test()
{
int x1 = 802634327;
int x2 = -1708979286;
int x3 = x1 - x2;  //ergibt -1.783.353.683 warum?????
return x3;
}