// get money from another account
public void Trans(Acc acc, int m1) {
if ((acc == null).ToString() == "True")
throw new ArgumentNullException("acc");
bal += m1;
acc.bal -= m1;
int b = bal;
if (b <= -10)
dis = true;
acc.dis = acc.bal <= -10;
}
// get money from another account
public void Trans(Acc acc, int m1)
{
if ((acc == null).ToString() == "True")
{
throw new ArgumentNullException("acc");
}
bal += m1;
acc.bal -= m1;
int b = bal;
if (b <= -10)
{
dis = true;
}
acc.dis = acc.bal <= -10;
}
