Kotlin Program to Add Two Complex Numbers by Passing Class to a Function

Example: Add Two Complex Numbers

class Complex(internal var real: Double, internal var imag: Double)

fun main(args: Array<String>) {
    val n1 = Complex(2.3, 4.5)
    val n2 = Complex(3.4, 5.0)
    val temp: Complex

    temp = add(n1, n2)

    System.out.printf("Sum = %.1f + %.1fi", temp.real, temp.imag)
}

fun add(n1: Complex, n2: Complex): Complex {
    val temp = Complex(0.0, 0.0)

    temp.real = n1.real + n2.real
    temp.imag = n1.imag + n2.imag

    return temp
}

When you run the program, the output will be:

Sum = 5.7 + 9.5i

In the above program, we created a class Complex with two member variables: real and imag. As name suggests, real stores real part of a complex number and imag stores the imaginary part.

The Complex class has a constructor with initializes the value of real and imag.

We also created a new static function add() that takes two complex numbers as parameters and returns the result as a complex number.

Inside the add() method, we just add the real and imaginary parts of complex numbers n1 and n2, store it in a new variable temp and return temp.

Then, in the calling function main(), we print it using printf() function.

Here's the equivalent Java code: Java program to add two complex numbers