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# Swift Program to get the denominator from a rational number

In this article, we will learn how to write a swift program to get the denominator from the rational number. A rational number is a number, which represents in the form of n/m where m is not equal to zero. Here n is known as the numerator and m is known as the denominator. For example, 2/3, 11/19, etc. Here, 2 and 11 are numerators whereas 3 and 19 are denominators.

## Algorithm

**Step 1** − Create a structure to create a rational number.

**Step 2** − In this structure, create two properties of integer type to store the numerator and denominator of the rational number.

**Step 3** − Create a method to display rational numbers.

**Step 4** − Create a struct instance and initialize the numerator and denominator properties of the struct.

**Step 5** − Access the denominator property using the dot operator to get the denominator.

**Step 6** − Print the output.

## Example

Following Swift program to get the denominator from the rational number.

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)")

## Output

Rational number: 129 / 871 denominator: 871

Here in the above code, we create a rational number using structure. In this struct, we declare two properties of the same type to store the value of the numerator and denominator of the rational number. Now we create a struct instance and initialize the numerator with 129 and denominator with 871. To get the denominator we access the denominator property using the dot operator along with the struct instance, store the result into the deno variable, and display the output that is 871.

## Conclusion

Therefore, this is how we can find the denominator from the rational number in Swift.