static void Main(string[] args)
{
TerminalExpression a = new TerminalExpression(4);
NegativeExpression b = new NegativeExpression(a);
TerminalExpression c = new TerminalExpression(5);
MultiplyExpression d = new MultiplyExpression(a, b);
MultiplyExpression e = new MultiplyExpression(a, c);
Console.WriteLine(d.solve());
Console.WriteLine(e.solve());
}
static void Main(string[] args)
{
TerminalExpression a = new TerminalExpression(4);
NegativeExpression b = new NegativeExpression(a);
TerminalExpression c = new TerminalExpression(5);
TerminalExpression nol = new TerminalExpression(0);
DivisionExpression d = new DivisionExpression(a, b);
DivisionExpression e = new DivisionExpression(a, c);
DivisionExpression f = new DivisionExpression(c, nol);
String text;
try{
Console.WriteLine(f.solve());
} catch (Error err) {
text = err.printMessage();
Console.WriteLine(text);
}
Console.WriteLine(d.solve());
Console.WriteLine(e.solve());
}