using System;

public class Program

{

    public class Rational

{

public int num;//chislitel

public int denum;//znamenatel

public double dec; //desetichnopredstavqne

public voidAdd(Rational r) //funkciq za sybirane

{

this.num = this.num * r.denum + r.num *

​

this.denum;

​

this.denum = this.denum * r.denum;

Console.WriteLine(num + "/" + denum);

}

        public void Sub(Rational r) //funkciq za izvajdane

​

{

this.num = this.num * r.denum - r.num * this.denum;

this.denum = this.denum * r.denum;

Console.WriteLine(num + "/" + denum);

}

public void Mult(Rationalr) //funkciq za umnojenie

{

this.num = this.num * r.num;

this.denum = this.denum * r.denum;

Console.WriteLine(num + "/" + denum);

}

public void Div(Rational r) //funkciq za delenie

{

this.num = this.num * r.denum;

this.denum = this.denum * r.num;

Console.WriteLine(num + "/" + denum);

}

        public int Compare(Rational r)

​

{

if (this.num * r.denum > r.num * this.denum) return 1;

if(this.num * r.denum < r.num * this.denum) return -1;

return 0;

}

//funkciq,koqto po zadadeno drobno chislo presmiata

​

predstavianeto mu kato desetichna drob

​

public double Dec()

{

return this.dec = (double)this.num /this.denum;

}

public void Print(Rational r) //desetichno predstaviane

{

this.dec = (double)this.num /this.denum;

Console.WriteLine(dec);

}

​

static void Main(string[] args)

​

{

Rationalr = new Rational();

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

Console.Write("Sabirane:");

r.Add(r);

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

Console.Write("Izvajdane:");

r.Sub(r);

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

Console.Write("Umnojenie:");

r.Mult(r);

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

​

Console.Write("Delenie:");

​

r.Div(r);

Console.WriteLine("Sravnenie:");

r.Compare(r);

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

Console.WriteLine("desetichno

​

predstavqne:");

r.Dec();

r.num = int.Parse(Console.ReadLine());

r.denum = int.Parse(Console.ReadLine());

Console.Write("desetichno predstavqne:");

r.Print(r);

                  }

    }

}