public double Calculation(ref bool value, ArNode root)
{
double right;
double result = 0;
double left;
if (value && (root != null))
{
right = Calculation(ref value, root.Right);
left = Calculation(ref value, root.Left);
if (value)
{
switch (root.act)
{
case '+':
result = right + left;
break;
case '*':
result = left * right;
break;
case '-':
result = left - right;
break;
case '/':
if (right != 0)
{
result = left / right;
}
else
{
value = false;
}
break;
}
}
}
return(result);
}
public ArTree() // Конструктор
{
root = null;
}
