Playground

import System;

public value Money
{
	public:
		i64 Cents;
		new(i64 Cents);

		op +(Money a, Money b) : Money => new Money(a.Cents + b.Cents);
		op -(Money a) : Money => new Money(-a.Cents);
		op *(Money a, i64 k) : Money => new Money(a.Cents * k);
		op ==(Money a, Money b) : bool => a.Cents == b.Cents;
		op <(Money a, Money b) : bool => a.Cents < b.Cents;
		op ++(Money a) : Money => new Money(a.Cents + 1);
		op (i64)(Money m) => m.Cents;
		op (Money)(i64 cents) => new Money(cents);
}

Main()
{
	Money a = new Money(150);
	Money b = new Money(250);
	Console.WriteLine((a + b).Cents + " " + (-a).Cents + " " + (a * 3).Cents);
	Console.WriteLine((a == b) + " " + (a != b) + " " + (a < b));
	a++;
	++a;
	Console.WriteLine((i64)a);
	Money c = (Money)99i64;
	Console.WriteLine(c.Cents);
}