# Сравняване на рац. числа

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```class Rational
{
int num;
int den;
public Rational(Rational r)
{
this.num = r.num;
this.den = r.den;
}
public Rational(int n, int d)
{
this.num = n;
this.den = d;
normalize();
}
public double getDec()
{
return (double)this.num / this.den;
}
public string print()
{
return string.Format("{0}/{1}", this.num, this.den);
}
public Rational multi(Rational r)
{
return new Rational(this.num * r.num, this.den *= r.den);
}
public Rational dev(Rational r)
{
return new Rational(this.num * r.den, this.den * r.num);
}
public Rational sum(Rational r)
{
int a = this.num * r.den + r.num * this.den;
int b = this.den * r.den;
return new Rational(a, b);

}
public Rational sub(Rational r)
{
int a = this.num * r.den - r.num * this.den;
int b = this.den * r.den;
return new Rational(a, b);

}
public int compare(Rational r)
{
int a = this.num * r.den;
int b = r.num * this.den;
if (a > b)
{
return 1;
}
else if (a < b)
{
return -1;
} else
{
return 0;
}
}
void normalize()
{
int a = Math.Abs(this.num);
int b = Math.Abs(this.den);
while (a != b)
{
if (a > b)
{
a -= b;
}
else
{
b -= a;
}
}
this.num /= a;
this.den /= b;
}
}
class Program
{
static void Main(string[] args)
{
Rational a = new Rational(9, 5);
Rational b = new Rational(7, 3);
Console.WriteLine(a.compare(b));

}
}
}```