import Foundation
import Glibc

// Structure to create rational number
struct RationalNumber {
   var numerator: Int
   var denominator: Int
   func display() {
      print("Rational number: \(numerator) / \(denominator)")
   }
}

// Initialize numerator and denominator of the rational number
let rNumber = RationalNumber(numerator: 129, denominator: 871)
rNumber.display()

// Finding denominator
let deno = rNumber.denominator
print("denominator: \(deno)")

Rational number: 129 / 871
denominator: 871